一、缩略语
1、GMDSS
A:Global Maritime Distress and Safety System 全球海上遇险与安全系统B:Global Maritime Distress and SafeSystem 全球海上遇险与安全系统C:Global Maritine Distress and Safety System 全球海上遇险与安全系统D:Global Maritime Distress and Safety System 全球海上遇险系统
2、INMARSA T
A:International Mobile Satellite Organization 国际海事卫星组织
B:International Maritime Satellite Organization 国际移动卫星组织
C:International Maritime Satellite Organization 国家海事卫星组织
D:International Maritime Satellite Organization 国际海事卫星组织
3、POR
A:Pacific Ocean Region 大西洋区
B:Pacific Ocean Region 太平洋区
C:Pacific Ocean Region 印度洋区
D:Pacific Ocean Region 北冰洋区
4、DSC
A:Digital Select Call 数字选择性呼叫
B:Digital Search Call 数字选择性呼叫
C:Digital Selective Call 数字选择性呼叫
D:Digital Searching Call 数字选择性呼叫
5、MSI
A:Maritime Safety Information 海上安全信息
B:Mobile Safety Information 海上安全信息
C:Maritime Safe Information 海上安全信息
D:Maritime Signe Information 海上安全信息
6、EPIRB
A: Urgency Position Indicating Radio Beacon 紧急无线电示位标
B:Emergency Position Indicating Radio Beacon 紧急无线电示位标
C:Emergency Positive Indicating Radio Beacon 紧急无线电示位标
D:Emergency Position Identification Radio Beacon 紧急无线电示位标
7、LES
A: Lord Earth Station 陆地地球站
B:Land Earth Station 陆地地球站
C:Land Earth State 陆地地球站
D:Land Earth Station 移动地球站
8、MSI
A: Maritime Safety Information 海上安全信息
B:Maritine Safety Information 海上安全信息
C:Maritime Safe Information 海上安全信息
D:Maritime Safety Identification 海上安全识别
9、ETA
A: Estimate Time of Arrival 预计抵达时间
B:Estimated Time of Arrival 预计离港时间
C:Estimated Time of Arrival 预计抵达时间
D:Estimated Timing of Arrival 预计抵达时间
10、IMO
A: International Maritime Organization 国际海事组织
B:Internation Maritime Organization 国际海事组织
C:International Mobile Organization 国移动组织
D:International Maritime Organize 国际海事组织
二、单选题
1、Which of the following equipments on board is for the COSPAS-SARSA T system?
A:DSC
B:NA VTEX
C:VHF
D:EPIRB
2、Please choose the INMARSA T-C NCS ID of the W-AOR:
A:044
B:001
C:211
D:144
3、Which service does not the EGC system have？
A: Safety NET
B: Fleet NET
C:SART
D: Sending MSI
4、The VHF CH70 could be used to send ______:
A:FAX
B:DSC
C:NBDP
D:SSB
5、In each NA VTEX message there is a technical code (B1B2B3B4):which character is the station identification ?
A:B1
B:B2
C:B3
D:B3B4
6、The following radio communication systems are used in GMDSS except the INMARSA T system:
A:VHF
B:VHF MF and HF terrestrial systems
C:the COSPAS-ASRSA T system
D:the FLAG SIGNAL systems
7、Which equipment is required to be carried in the all sea areas ?
A:VHF
B:MF
C:HF
D:SES
8、Where is the INMARSA T’S headquarters?
A: China
B: The USA
C: the United Kingdom
D: Canada
9、The Maritime safety information contains _________:
A: distress message
B: Urgency message
C: Distress alert
D: Navigational and meteorological warnings
10、Both the satellite communication and terrestrial communications will _________:
A: not be used in the GMDSS
B: be used only for general communications
C: be replaced by Morse
D: be used in the GMDSS
11、If we pass this test it may be possible for us to obtain
A:The First-class Radioelectronic Certificate
Ｂ:The Second-class Radioelectronic Certificate
Ｃ:The General Operator’s Certificate
D:The Restricted Operator?s Certificate
12、Which of the following statement is correct?
A:2182 KHz is a carrier frequency used for distress and safety communications using radio
telegraphy which class of emission is A1A
B:2187:5 KHz is a carrier frequency used for distress and safety calls using digital selective calling:
C:2187:5 KHz is a carrier frequency used for distress and safety calls using narrow-band-direct-printing:
D:2182 KHz is a carrier frequency used for distress and safety traffic using narrow band direct printing:
13、There are VHF equipments and either a satellite EPIRB or a VHF EPIRB on board according to the equipment carriage requirement:Which sea area does the ship sail?
A:A1
B:A2
C:A3
D:A4
14、Which of the following description of usage is suitable for 2174:5KHz frequency?
A:MSI
B:NBDP
C:DSC
D:RT
15、Which of the following description about Sea Area A3 is correct?
A:an area within the radiotelephone coverage of at least one VHF coast station and one MF coast station B:an area, including Sea Area A1 and A2, within the coverage of an INMARSAT geostationary satellite.
C:An area, excluding Sea Area A1 and A2, within the coverage of an INMARSAT geostationary satellite.
D:An area, excluding Sea Area A1 and A2, within the coverage of an COSPAS—SARSAT system.
16、In the COSPAS-SARSA T system, there are _______types of beacons at present?
A:3
B:2
C:1
D:4
17、The medical message should be preceded by the word ________.
A:OBS
B:TMZ
C:MEDICO
D:NW
18、All the distress message should be preceded by ______.
A:PAN PAN
B:SECURITE
C:MAYDAY
D:MEDICO
19、What final place is a distress call/message routed to?
A:CES
B:NCS
C:RCC
D:MCC
20、The date for entry into full effect for GMDSS is 1st February _______.。
A:1999
B:1992
C:1995
D:1997
21、Which definition’s meaning is the “Telephone using phase modulation”:
A: G3E
B: F3E
C: G2B
D: F1B
22、The following number is INMARSA T-C SES’s number, which one is Chinese vessel’s? A: 411230375
B: 441263826
C: 421330313
D: 430961627
23、When must a ship be fitted with NA VTEX receiver?
A: 01 FEB 1992
B: 01 AUG 1993
C: 01 FEB 1999
D: 01 FEB 1995
24、What kinds of ships may not use SOLAS convention?
A: 300T:G:T upward
B: Passenger ships
C: 300T:G:T cargo ship
D: 300T:G:T below
25、The frequency 156:525MHz and 156:8MHz should be in the band of ________:
A: LF
B: MF
C: HF
D: VHF
26、The broadcast of MSI will be made ________
A:continuously
B:on terrestrial communication system
C:on satellite communication system
D:Both B and C
27、What is the main means in the GMDSS for locating ship in distress or their survival craft? A: SART
B: DSC
C: VHF
D: SSB
28、The radio equipment to be carried on board GMDSS ship depends upon _____________
A:the tonnage of the ship
B:the type of the ship
C:the sea area in which the ship operates
D:the horse power of the ship
29、“AMENED ETA PILOT STA TION”means:
A:ETA pilot station has been changed
B: ETA pilot station will be given afterwards
C:ETA pilot station was not given
D:ETA pilot station is given
30、What does the abbreviation “VHF”stand for?
A:V essel?s Hoisting Flag
B:V ery High Safety
C:V essel?s Homing Frequency
D:V ery High Frequency
31、:”_________”should be used during the poor visibility if the radar’s screen shows heavy sea returns
A: Gain control
B: Brilliant Control
C: Anti- clutter control
D: Sweep Intercept
32、Which of the following indicates that a station transmit concerning navigation safety messages by radio telephone?
A: TTT
B: The spoken word pan
C: The spoken word SECURITY
D: XXX
33、Which of the following indicates a grave and imminent danger requesting immediate
assistance on the radio telephone?
A: SOS
B:MAYDAY
C:SECURITY
D:PAN
34、GMDSS is the abbreviation of
A:The Global Maritime Distress and Safety System
B:The Global Mariners Distress and Safety System
C:The Global Marines Distress and Safe System
D:The Global Marines Disco and Safe System
35、Which of the following function that is not fulfilled by Inmarsat-C?
A: Distress alerting
B: Store-and-forward messaging
C: Receipt ofEGC messages
D: Telephone communication
36、The EGC service is composed of:
A: SafetyNET service
B: FleetNET service
C:NA VTEX service
D: All of the above
37、Which of the following are included in mandatory services of Inmarsat-C? A: FleetNET Service
B: Data Reporting
C: SafetyNET Service
D: Polling Service
38、Which of the following is not included in Terrestrial communications? A: Long-Range service
B: Medium-Range service
C: Short-Range service
D: INMARSA T service
39、Terrestrial traffic system has the following equipment. ( )
A. INMARSA T-A
B. INMARSA T-B
C. INMARSA T-B
D. VHF device AND MF/HF equipment
40、An “area call”is usually applied to . .
A：alert all ships in a limited sea area
B：all ships
C. send the alert to the ships in vicinity of distress incident
D. several ships
41、What is the telex number of IOR in INMARSA T?
A. 581
B. 871
C. 583
D. 873
42、Which expression has the different meaning from “entry into force”?
A. coming into effect
B. moving to full effect
C. being based on force
D. coming into Chinese
43、Which of the following is not a DSC calling content ?
A. the ID of calling ship
B. the name of calling ship
C. category of priority
D. work frequency
44、COSPAS-SARSA T is intended to be used for .
A. distress alerting
B. locating distress beacon
C. storing distress signal
D. A and B
45、The VHF CH70 could be used to send _________.
A. FAX
B. TELEX
C. DSC
D. E-mail
46、Which of the following frequency is NOT used for GMDSS?
A.2182KHz
B.500KHz
C.518KHz
D.2187.5MHz
47、The Maritime safety information contains _______.
A.Distress message
B. Ordinary message
C. Distress alert
D. Navigational warnings
48、What kind of transmission mode will be used in SSB voice communication?
A. CW
B. A2H
C. A1A
D. J3E
49、Which equipment is ship terminal equipment of COSPAS-SARSA T system?
A. DSC
B.SSB
C.EPIRB
D.NBDP
50、The broadcast of MSI will be made __________.
A.continuously
B. on terrestrial system
C.on satellite system
D. Both B and C
51、The VHF CH16 is called ________.l
A. common channel for pilot service
B. aircraft calling channe
C. international distress and safety channel
D. navigation safety communication channel
52、What is the main means in the GMDSS for locating ship in distress or their survival craft?
A. SART
B. DSC
C. VHF
D. SSB
53、The sea area A3 will be within the coverage of
A.INMARSA T satellites
B. MF radio communication
C. VHF radio communication
D. all above
54、Which of the following frequencies is as international distress and safety frequencies on MF for radio telephony?
A.2187.5 KHz
B.2174.5 KHz
C.2177.0KHz
D.2182KHz
55、How many frequencies designated for DSC international distress and safety Frequencies on HF band are_____.
A. 6
B. 3
C. 4
D.5
56、Urgency message should be preceded by .
A. PAN PAN
B. SECURITE
C. MAYDAY
D. MEDICO
57、Which of the following statement is correct?
A. 490 KHz is used exclusively for MSI through the NA VTEX system.
B. 518 KHz is used exclusively for MSI through the NA VTEX system.
C. 2174.5KHz is used exclusively for MSI through the NA VTEX system.
D. 8376.5KHz is used extensively for MSI through the NA VTEX system.
58、The frequency 2174.5kHz is ________.
A. DSC distress and safety call channel.
B. MF radiotelex distress and safety traffic frequency.
C.telephone distress and safety communication channel.
D. telephone channel.
三、阅读理解
PASSAGE1.Basic description of DSC:DSC is basically a calling system .Each call consists of a “packet” of digitized information of one of four priorities : Distress , Urgency , Safety , Routine :Message can be routed to “all stations”, to an individual station or to a group of stations, using their Maritime Mobile Selective-call Identify code (MMSI):Distress messages are automatically broadcast to “All stations”. In addition to the MMSI of source and destination stations, information can be conveyed in the DSC message:For example, to aid the Rescue Service, the DSC Distress alert message is configured to contain the following: A\Ship?s identify (the nine digit MMSI) B\Time. C\ Nature of distress (in the form of standard code) D\Ship?s position.Where fitted ship?s officers should ensure they are fully conversant w ith the procedure for entering the necessary information into DSC equipment:At sea, unless provided automatically from a navigation system, ship?s position should be update at least once during each watch period.
1、At sea, if DSC equipment can?t get ship?s position message from a navigation system automatically, then the position message should be renewed _______.
A:.at least every 4 hours:
B:at least every 8 hours
C.at least every 12 hours:
D:at least every 24 hours.
2、According to the message, distress message can be received by _______.
A:all stations:
B:coast stations.
C:ship stations:
D:group of specified stations.
3、Each DSC “packet”have _______ priority(priorities)
A:1
B:2
C:3
D:4
4、Which of the following statement is not true??
A: A DSC message has a MMSI of source station.
B: A DSC message has a MMSI of destination station.
C: A DSC message has a name of source station.
D: A DSC message also has other information for sending round:
Passage2. The NA VTEX receiver is a Narrow Band Direct Printing (NBDP) device operating on the frequency 518Khz, (some equipment can also operate on 490Khz and 4209.5Khz), and is a vital part of the Global Maritime Distress and Safety System (GMDSS).It is automatically receives Maritime Safety Information such as Radio Navigational Warnings, Storm/Gale Warnings, Meteorological Forecasts, Piracy Warnings, Distress Alert etc.The information received is printed on the receiver?s own paper recorder roll:Each message begi ns with starts of message function (ZCZC) followed by a space then four B characters:The First, (B1), identifies the station being received, the second, (B2), identifies the subject i.e:Navigational Warning, Met Forecast etc, and the third and fourth, (B3+B4), form the consecutive number of the message from that station:This followed by the text of the message and ends with an end of message function (NNNN).The NA VTEX system broadcasts COASTAL WARNING which cover the area from the fairway buoy out to 250 nautical miles from the transmitter, the transmission from some transmitters can be received out to 400 nautical miles and even further in unusual propagation conditions.
1、The NA VTEX receiver works on _________.
A:4209.5Khz
B:490Khz
C:518Khz
D:All above.
2、Which character(s) identifies station of NA VTEX?
A.B1
B:B2
C:B3
D:B4
3、Which statement is TRUE?
A:The NA VTEX system is very important to GMDSS.
B:The NA VTEX system is a part of GPS,
C:The NA VTEX system is a part of EGC
D:The NA VTEX system has nothing to do with the GMDSS
4、Which of the following is not TRUE?
A:Each message begins with starts of message function(ZCZC).
B:Each message ends with an end of message function(NNNN).
C:The NA VTEX system can cover the 250 miles from the transmitter.
D:The NA VTEX system can not cover 400 miles from the transmitter.
Passage3. Terrestrial Communications_____LONG-RANGE SERVICE_____Use of HF provides a long-rang service in both the ship-to-shore and shore-to-ship directions:In case covered by INMARSA T it can be used as an alternative to satellite communications and outside these areas it provides the only long-rang communication capability:Frequencies have been designated in the 4,6,8,12 and 16 MHz bands for this service.Digital selective calling (DSC) forms the basis of distress alerting and safety communications:Distress and safety communications following a DSC call can be performed by radiotelephone or NBDP._____MEDI UM-RANGE SERVICE_______A medium-range service is provided on frequencies in the 2 MHz band:In the ship to shore, ship to ship and shore to ship directions 2187.5kHz will be used for distress alerts an safety calls using DSC, and 2182kHz will be used for distress and safety traffic by radiotelephone, including SAR co-ordinatind and on-scene communications:2174.5kHz will be used for radiotelex (NBDP) distress and safety traffic._____SHORT-RANGE SERVICE___VHF provides short-range service on the frequencies: A\156.525MHz (Channel 70) for distress and safety calls using DSC, and B\156.8MHz(Channel 16) for distress and safety traffic by radiotelephone, including SAR co-ordinating and on-sense communications.
1、In GMDSS system, terrestrial communications can be divided into ____parts.
A:.one
B:Two
C:Three
D:four
2、2187.5kHz can be used for________.distress and safety calls on radiotelex system in MEDIUM-RANGE service.
A:distress and safety calls on digital selective calling system in MEDIUM-RANGE service.
B:distress and safety calls on radiotelex system in LONG-RANG service.
C:distress and safety calls on radiotelex system in SHORT-RANGE service.
D:distress and safety calls on telex system in satellite service.
3、VHF CH 16 is a distress and safety frequency in short-rang service, so it should be used for ______.
A:distress and safety radiotelex calls in short-rang service
B:distress and safety DSC calls in short-rang service
C:distress and safety radiotelex calls in MEDIUM-RANG service
D:distress and safety radiotelephone calls in short-rang service
4、The HF can provide the service which is ____________.
A:not covered by INMARSA T:
B: only Short-Range Service .
C: only Medium-Range Service
D: Covered by INMARSA T.
5、Which of the following is true?
A:Digital selective calling (DSC) follows a telephone call.
B:Distress and safety communications by radiotelephone or NBDP follows a DSC distress call. C:Digital selective calling (DSC) follows NBDP:traffic.
D:Radio telephone alert forms the basis of distress alerting and safety communications:
三、阅读理解
PASSAGE1:The IMO also introduced digital selective calling (DSC) on VHF, MF and HF maritime radios as part of the GMDSS system: DSC is primarily intended to initiate ship/ship, ship/shore, and shore/ship radiotelephone and MF/HF radiotelex calls: DSC calls can also be made to individual ships or groups of ships: DSC distress alerts, which consist of a preformatted distress message, are used initiate emergency communications with ships and rescue coordination centers: When fully implemented, DSC will eliminate the need for persons on a ship's bridge or on shore to continuously guard radio receivers on voice radio channels, including VHF channel 16 (156:8 MHz) and 2182 kHz now used for distress, safety and calling: A listening watch aboard GMDSS-equipped ships on 2182 kHz ended on 1 February 1999, and on VHF channel 16 is scheduled to end on 1 February 2005: We urge that the DSC-equipped VHF and MF/HF radios be externally connected to a satellite navigation receiver: That connection will ensure accurate location information is sent to a rescue coordination center if a distress alert is ever transmitted: FCC regulations actually require that ship's position be manually entered into the radio every four hours on ships required to carry GMDSS equipment, while that ship is underway (47 CFR 80:1073): Once SOLAS ships are allowed to disband watch-keeping on VHF and MF radiotelephone channels, other ships are going to need DSC-equipped radios to contact these ships, particularly in a passing situation, especially when outside U:S: waters: We believe VHF, MF and HF radiotelephone equipment carried on ships should include a DSC capability as a matter of safety: To achieve this, the FCC requires that all new VHF and MF/HF maritime radiotelephones type accepted after June 1999 to have at least a basic DSC capability: VHF digital selective calling also has other capabilities beyond those required for the GMDSS: The Coast Guard uses this system to track vessels in Prince William Sound, Alaska, V essel Traffic Service: IMO and the USCG also plan to require ships carry a Universal Automatic Identification System, which will be
DSC-compatible: Countries having a GMDSS A1 Area will be able to identify and track AIS(自动识别系统)-equipped vessels in its waters without any additional radio equipment:
1、Which of the following is the best answering?
A: Only VHF equipment can used DSC:
B: Only MF equipment can used DSC
C: Only HF equipment can used DSC:
D: DSC will use on VHF, MF and HF equipment
2、According to this message, which of the following is wrong
A: When fully implemented, for persons to continuously guard will eliminate
B: DSC is used for watching
C: DSC is only used for watching:
D: DSC is used to initiate emergency communication:
3、According to this message, the watch-keeping of VHF CH16 will be ended _______:
A: on 1 February 1999:
B: on 1 February 2005:
C: on 1 February 2000:
D: on 1 February 2010:
4、The writer intends that the VHF/MF/HF radio equipment _______:
A:should have its own satellite navigator;
B:have nothing to do with the satellite navigation system;
C:should be connected to a satellite navigator:
D:should change the ship?s position manually every hours:
5、Which statement is not correct?
A:DSC can initiate radio-telephone and radiotelex calls on VHF/MF/HF bands:
B:DSC can initiate radio-telephone calls on VHF/MF/HF bands:
C:DSC can initiate radiotelex calls on MF/HF bands:
D:DSC can initiate VHF/MF/HF radio-telephone and MF/HF radiotelex calls:
6、The AIS equipment will be used to ________:
A:identify and track vessels in A1sea area;
B: identify and track vessels in A2sea area;
C:identify and track vessels in A3sea area;
D:identify and track vessels in A4sea area:
7、The meaning of word “radios”in the passage is :
A: radio equipments
B: radio waves
C: radio programs
D: no meaning
Passage2.Satellite systems operated by the International Mobile Satellite Organization (Inmarsat), are also important elements of the GMDSS: Three types of Inmarsat ship earth station terminals are recognized by the GMDSS: the Inmarsat A, B and C: The Inmarsat A and B, an updated version of the A, provide ship/shore, ship/ship and shore/ship telephone, telex and high-speed data services, including a distress priority telephone and telex service to and from rescue coordination centers: The Inmarsat C provides ship/shore, shore/ship and ship/ship store-and-forward data and telex messaging, the capability for sending preformatted distress messages to a rescue coordination center, and the SafetyNET service: The Inmarsat C SafetyNET service is a satellite-based worldwide maritime safety information broadcast service of high seas weather warnings, NA V AREA navigational warnings, radionavigation warnings, ice reports and warnings generated by the USCG-conducted International Ice Patrol, and other similar information not provided by NA VTEX: SafetyNET works similarly to NA VTEX in areas outside NA VTEX coverage: Inmarsat C equipment is relatively small and lightweight, and costs much less than an Inmarsat A or B: Inmarsat A and B ship earth stations require relatively large gyro-stabilized antennas; the antenna size of the Inmarsat C is much smaller: Inmarsat also operates an EPIRB system, the Inmarsat L, which is similar to that operated by COSPAS-SARSA T: Under a cooperative agreement with the National Oceanic and Atmospheric Administration (NOAA), combined meteorological observations and AMVER reports can now be sent to both the USCG AMVER Center, and NOAA, using an Inmarsat C ship earth earth station, at no charge: There is also no charge to register for this service and to receive the necessary Inmarsat C software: For more information, see the NOAA Shipboard Environmental (data) Acquisition System, or SEAS: We strongly urge that Inmarsat C equipment have an integral satellite navigation receiver, or be externally connected to a satellite navigation receiver: That connection will ensure accurate location information to be sent to a rescue coordination center if a distress alert is ever transmitted:
1、According to the passage, which type of Inmarsat SES terminals are approved by the GMDSS? A:INMARSA T-C;
B:INMARSA T-M;
C:INMARSA T MINI-M;
D:INMARSA T-P
2、The writer suggests that INMARSA T-C ship earth stations ______
A:should have an satellite navigator;
B:should be connected to a satellite navigation receiver
C:A & B
D:A or B
3、The SafetyNET (satellite-based worldwide maritime safety information broadcast service) service is provided by _____________
A:INMARSA T-Asystem
B:INMARSA T-B system
C:INMARSA T-C system
D:INMARSA T-M system
4、Which ship earth station does not requires relatively large gyro-stabilized antenna?
A:INMARSA T-A
B:INMARSA T-B
C:INMARSA T-C
D:Both A & B
5、The meaning of phrase “store-and-forward”in the passage is
A: first memorize, then relay
B: memorizing message
C: directly send message
D: store a file
6、INMARSA T-L is
A: INMARSA T-C system
B: INMARSA T-B
C: EPIRB system of INMARSA T
D: COSPAS-SARSA T
7、According to the passage, which of the following is not true?
A: a meteorological observation can be transmited to NOAA with Inmarsat-C SES at free of charge
B: A AMVER reports can be transmited to the USCG AMVER Center at charge
C: It is no charge to register for AMVER service
D: It is no charge to receive Inmarsat-C software
Passage3.The GMDSS installation on ships include one or more search and rescue radar transponders (SART), devices which are used to locate survival craft or distressed vessels by creating a series of dots on a rescuing ship's 3 cm radar display: The detection range between these devices and ships, dependent upon the height of the ship's radar mast and the height of the SART, is normally about eight nautical miles: Note that a marine radar may not detect a SART even within this distance, if the radar settings are not optimized for SART detection
1、Which statement is true according to the passage?
A:SART can send alert signals to RCC through INMARSA T system;
B:SART can send alert signals to RCC through COSPAS-SARSA T system;
C:SART can send alert signals to RCC through VHF/HF/MF communication system;
D:SART is used to locate survival craft or distressed vessels
2、The detected distance of SART is determined by_________
A、The position of the SART
B、The frequency of the marine radar
C、The height of the radar antenna and the SART
D、The frequency of the SART
3、If the radar settings are not optimized for SART detection，maybe
A、can not see returns of SART on radar screen
B、can see returns of SART on radar screen
C、affect function of SART
D、be independent of radar detecting
Passage4.Radar should not be regarded as more than an aid to the detection of other vessel, and collisions in poor visibility can be averted for certain only if the information provided by the radar set is correctly interpreted。It is insufficient merely to detect the presence of another vessel; its bearing and range must be noted from time to time before risk of collision can be ascertained。Only after early plotting of the ranges and bearings can a clear appreciation of the developing collision risk be obtained。The information to be obtained from a plot would in many cases, be of inestimable value before taking any necessary avoiding action。It will always be necessary in restricted visibility to go to a moderate speed, having regard to the existing circumstances and conditions。
1、In restricted visibility, the vessel should
A、proceed at a moderate speed
B、stop at once
C、maintain its normal speed
D、take necessary action to avoid collision
2、Collisions in poor visibility can be averted for certain only if
A、 a vessel can change directions
B、the information detected by radar is correctly explained
C、ample alteration of course has been done
D、none of the above
3、In most cases, the information from a plot is of
A、no great value
B、decisive role
C、inestimable value
D、little significance
PASSAGE1.
The Inmarsat Fleet service is based on Geo-stationary 3rd generation satellites situated above the equator. Geo-stationary means that the satellites are always located in the same position, i.e. they rotate at the same speed as that of the earth. Each satellite covers a certain area (footprint) and supports a number of powerful spot-beams making the service available in virtually all ocean regions on the earth between approximately 70°N and 70°S.The 4 Geo-Stationary Inmarsat Satellites.
The satellites are your connection to the worldwide networks, and they are managed by the
Network Co-ordination Stations (NCSs), run by Inmarsat. The primary functions of the NCSs are to constantly keep track of which terminals are logged on to the system, and assign a free channel when a call is made.
The gateway between the public network and the satellites are operated by Land Earth Stations (LES). The LES are run by different operators around the world.
The fleet services are prepared for operation with the next generation of Inmarsat satellites(Inm-IV) expected in 2005. The service supported by the Inmarsat Fleet encompasses.
1、Where is the satellites orbit of Inmarsat-F System situated?
A. Above the Equator.
B. near Polar.
C. 23 oN.
D. 23 oS.
2、he satellites run by Inmarsat are managed by the ( )?
A. LES.
B. IMO.
C. NCSs.
D. RCC
3、Which of the following service is not the high speed service?
A. Speech.
B. 3.1 kHz audio.
C. FAX.
D. 56 Kbit/s data.
4、Which statement is not true according to the passage?
A. To use each of the Inmarsat Fleet services, it is necessary to have at least one Inmarsat Mobile Number (IMN).
B. If the satellite region/areas is not known for the terminal the "country" code for a terminal is 870.
C. Mini-M voice and Mini-M fax are both low speed service.
D. Each satellite of Inmarsat covers a certain area on the earth between approximately 60°N and 60°S.
5、Which generation of Inmarsat satellite is expected in 2005?
A. III
B. IV
C. V
D. None of the above.
PASSAGE2.
The Handset is the primary interface for the Capsat Fleet system. It enables to user to dial number, it displays error and status message, and it is used to configure the transceiver.
The Handset is divided into 3 distinct and inter-working sections.
1. The first is the liquid Crystal Display (LCD) and Light Emitting Diodes (LED) section. This section gives the user visual indications about the operation and status of the system.
2. The second is the Function buttons section. This section enables the user to interact with the software menu system of the transceiver. The Function buttons enable the user to enter the menu system of the transceiver and change various settings.
3. The third is the Alpha-Numeric section. This section enables the user to dial and perform data entry functions into the transceiver. The keypad can be in normal (numeric) mode or alpha mode. Normal mode is used to enter digits (phone numbers) whereas alpha mode is used to enter letters (names in the phone book).
Access to some of the terminals functionality is restricted by PIN code. Two different kinds of User PIN codes are used in the system: One Pin for the Super User and one for the Service User. Common for both Pin types is that the length must be between 4 and 8 digits and that they contain digits between 0 and 9. The normal everyday user (Normal User) can make and receive calls, access the phonebook, chose an ocean region and a default LES, read the alarm log and status and make a call from the Helpdesk. For a description of these functions see section 4.1 Menu System. All other setup has to be carried out by a Super User or a Service User.
1、Which LED will illuminate when the system has the same speed with a satellite?
A. POWER LED.
B. ALARM LED.
C. CONNECTION LE
D.
D. SYNCHRONIZA TION.
2、Which section enables the user to interact with the software menu system of the transceiver?
A. Function buttons.
B. Alpha-Numeric.
C. Liquid Crystal Display (LCD).
D. Light Emitting Diodes (LED).
3、Which of the following PIN code possibly is correct?
A. 239.
B. 857523292.
C. 121.
D. 2329.
4、How many kinds of the user the PIN code are used in the fleet77 system?
A. 5.
B. 3.
C. 4.
D. 2
5、Which of the following is not true?
A.Two different kinds of User PIN codes are used in the system
B.Access to some of the terminals functionality is restricted by PIN code
C.The Handset is the primary interface for the Capsat Fleet system.
D.The Handset is divided into more than 3 distinct and inter-working sections.
PASSAGE3.
Distress Alerting is available on all maritime SESs enabling the SES in distress to send distress information on the signaling channel to MRCC for the required actions. The distress alerting information includes the SES identity (Inmarsat-C Mobile Number), date, latitude, longitude, course, speed, time of position update and nature of distress. The position is updated either from integrated or external GPS receiver or manually from a keyboard.
Distress Priority message is prepared in the SES text editor and sent on the messaging channel to MRCC regardless of the address given. The message may contain more detailed distress related information, eg. distress circumstances and assistance required.
The following services which relate directly to Distress and Safety are offered by all CESs as specified in the Radio Regulations under the GMDSS.
2 digit code Service Remarks
32 Medical Advice Use this code to obtain medical advice. Some CES have direct connections with local hospitals when this code is used.
38 Medical Assistance This code should be used if the condition of an ill or injured person on board the vessel requires urgent evacuation ashore or the services of a doctor aboard the vessel. This code will ensure that the call is routed to the appropriate agency/authority ashore to deal with the situation.
39 Maritime Assistance This code should be used to obtain Maritime assistance if the vessel requires assistance or in cases of oil pollution, etc.
41 Meteorological Reports This code should be used by weather observing vessels to send their weather observations. In most cases where this service is available the service is free of charge to the vessel, the National weather authority paying the relevant charges.
42 Navigational Hazards This code provides a connection to a navigational office
and Warnings for transmission of information from the vessel on any Warnings hazards which could endanger safety of navigation.
43 Ship Position reports This code provides a connection to an appropriate national or international centre collecting ship movement information for search and rescue (or other) purposes, e.g. AMVER, AUSREP etc.
See ALRS V olume 1 for a comprehensive list of the 2 digit codes relating to other services which are currently available through some or all CESs.
1、Which information is not included in the distress alerting information?
A. the SES identity
B. the speed of the ship in distress
C. nature of distress
D. the gross tonnage of the ship
2、The position of the ship can be updated from ( ).
A. integrated GPS receiver
移动通讯词汇（中英） 数字、英文 1/4比特数quarter bit number AGC恢复时间AGC recovery time AGC启动时间AGC attack time ATM技术asynchronous transfer technics, 异步转移模式，为多种速率信息的情况下研究的一种合适的传输与交换方式。 GSM 泛欧数字蜂窝移动通信系统GSM PLMN接入能力GSM PLMN access capability GSM PLMN连接类型属性 GSM PLMN connection type attribute GSM公共陆地移动网 GSM PLMN 用户身份模块：SIM J-K触发器J-K flip-flop M-序列M-sequence N进制数字信号n-ary digital system RS-232总线RS-232 bus A 安全地线 safe ground wire 安全特性 security feature 安装线 hook-up wire 按半周进行的多周期控制multicycle controlled by half-cycle 按键电话机p ush-button telephone set 按需分配多地址 demand assignment multiple access(DAMA) 按要求的电信业务demand telecommunication service 按组编码 encode by group B 八木天线Yagi antenna 白噪声white Gaussian noise 白噪声发生器white noise generator 半波偶极子halfwave dipole 半导体存储器 semiconductor memory 半导体集成电路semiconductor integrated circuit 半双工操作semi-duplex operation 半字节Nib 包络负反馈peak envelop negative feed-back 包络延时失真envelop delay distortion 薄膜thin film 薄膜混合集成电路thin film hybrid integrated circuit 保护比（射频） protection ratio (RF) 保护时段guard period 保密通信secure communication 报头header 报文分组packet 报文优先等级message priority 报讯alarm 备用工作方式spare mode 背景躁声background noise 倍频frequency multiplication 倍频程actave 倍频程滤波器octave filter 被呼地址修改通知 called address modified notification 被呼用户优先priority for called subscriber 本地PLMN local PLMN 本地交换机local exchange 本地移动用户身份local mobile station identity ( LMSI) 本地震荡器local oscillator 比功率(功率密度) specific power 比特bit 比特并行bit parallel 比特号码bit number (BN) 比特流bit stream 比特率bit rate 比特误码率bit error rate
中国联通China Unicom 中国移动China Mobile 网络容量network capacity 交换容量exchange capacity 扩容Capacity Expansion 平滑升级smooth upgrade 射频Radio Frequencies 接收灵敏度Receive Sensitivity: 数据Data Options 传输速率Data Rate 电源部分Power supply 数据接口Data Interface 天线接口Antenna Interface 传输速率Baud Rate 用户交互界面User Interface 认证Certifications 网络数据传输数率net data transfer rate 联通无限U-Max 旗下subordinate] 品牌trademark U-Info 互动视界U-Magic 神奇宝典 U-Net 掌中宽带 U-Mail 彩e U-Map 定位之星 U-Sms 联通在信 应用服务Application Service 产业价值链industrial value chain 战略目标strategic objective 渠道channel 转型transition/Transformation 推广extension 针对aim at 电信telecommunication 整合conformity 市场渗透率market penetration factor 微观的microcosmic 科学技术science and technology 地理环境geographic environment 宏观的macroscopical 供应链supply chain 产品种类product variety
MFG 常用英文单字 Semiconductor半导体 导体、绝缘体和半导体主要依据导电系数的大小，决定了电子的移动速度。 导体：金、银、铜、铁、人、水……导电系数大，传导容易 绝缘体：塑料、木头、皮革、纸……导电系数小、传导不容易 半导体：硅中加锗、砷、镓、磷……平时不导电加特定电压后导电 Wafer 芯片或晶圆：原意为法国的松饼，饼干上有格子状的饰纹，与FAB内生产的芯片图形类似。 Lot 批；一批芯片中最多可以有25片，最少可以只有一片。 Wafer ID 每一片芯片有自己的芯片刻号，叫Wafer ID。 Lot ID 每一批芯片有自己的批号，叫Lot ID。 Part ID 各个独立的批号可以共享一个型号，叫Part ID。 WIP Work In Process，在制品。从芯片投入到芯片产品，FAB内各站积存了相当数量的芯片，统称为FAB内的WIP 。 一整个制程又可细分为数百个Stage和Step，每一个Stage所堆积的芯片， 称为Stage WIP。 Lot Priority 每一批产品在加工的过程中在WIP中被选择进机台的优先级。 Super Hot Run的优先级为1，视为等级最高，必要时，当Lot在 上一站加工时，本站便要空着机台等待Super Hot Run。 Hot Run的优先级为2，紧急程度比Super Hot Run次一级。 Normal的优先级为3，视为正常的等级，按正常的派货原则，或 视常班向生产指令而定。 Cycle time 生产周期，FAB Cycle Time 定义为：从芯片投入到芯片产生的这一段时间。 Stage Cycle Time：Lot从进站等候开始到当站加工后出货时间点截止。 Spec. 规格Specification的缩写。产品在机台加工过程中，每一站均设定规格。 机台加工后，产品或控片经由量测机台量测，该产品加工后，是否在规格 内。若超出规格﹝Out of SPEC﹞，必须通知组长将产品Hold，并同时通知 制程工程师前来处理，必要时机台要停工，重新monitor，确定量测规格， 藉以提升制程能力。 SPC Statistics Process Control统计制程管制；透过统计的手法，搜集分析资料，
WLAN--WirelessLocalAreaNetwork, 中文名叫:无线局域网 WiFi--Wireless Fidel ity ，是一种无线联网的技术（俗称：无线宽 带） DT--Drive Test ，路测，是无线网络优化数据采集的方法。 CQT--Call Quality Test ，呼叫质量测试或定点网络质量测 试 GPS--Global PositioningSystem （全球定位系统）的简 称 KPI--KeyPerformanceindicator 关键性能指标 SIM 卡--Subscriber Identifica tion Module 用户身份鉴别模件 FTTH--Fiber To The Home 光纤到户 Channel--海峡, 频道, 通道，通信中指信息传输的通道（信 道） Frequency-- 频率，通信中特指无线信号的频率 Mobile station -- 移动的设备，移动台，特指手机 Basestation--基站，用于接收和发送手机信号 Short message-- 短消息，短信 Communication-- 通 信 Network-- 网络 Mobile community-- 移动通信 4G--G 是generation （一代）的简称，特指第四代移动通信技 术 Protocol-- 协议，网络之间互联遵循的 规范 Online -- 在线的，名词可指网游 Online banking -- 网上银行 Wireless-- 无线，通信领域范畴指的是无线电或无线电波 Broadcast-- 广播 Cell--细胞；电池；蜂房的巢室；单人小室。移动通信网络中特指小区（基站信号覆盖的范围） Satell ite Communication-- 卫星通信 China Mobile-- 中国移动 China Telecom-- 中国电信 China Unicom-- 中国联通 Opted fiber--光纤 Cable-- 电缆 Management-- 管 理 DC--direct curren t ，直流电 AC--alternating current ，交流电 DT--Drive Tes t ，无线网络路测
1. WLAN--Wireless Local Area Network, 中文名叫: 无线局域网 2. WiFi--Wireless Fidelity ，是一种无线联网的技术（俗称：无线宽 带） 3. DT--Drive Test ，路测，是无线网络优化数据采集的方法。 4. CQT--Call Quality Test ，呼叫质量测试或定点网络质量测试 5. GPS--Global Positioning System （全球定位系统）的简称 6. KPI--Key Performance indicator 关键性能指标 7. SIM 卡--Subscriber Identification Module 用户身份鉴别模 件 8. FTTH--Fiber To The Home 光纤到户 9. Channel-- 海峡, 频道, 通道，通信中指信息传输的通道（信道） 10. Frequency-- 频率，通信中特指无线信号的频率 11. Mobile station-- 移动的设备，移动台，特指手机 12. Base station-- 基站，用于接收和发送手机信号 13. Short message-- 短消息，短信 14. Communication-- 通信 15. Network-- 网络 16. Mobile community-- 移动通信 17. 4G--G 是generation （一代）的简称，特指第四代移动通信技术
18. Protocol-- 协议，网络之间互联遵循的规范
Online--在线的，名词可指网游 On li ne bankin g--网上银行 Wireless--无线，通信领域范畴指的是无线电或无线电波 Broadcast--广播 Cell--细胞；电池；蜂房的巢室；单人小室。移动通信网络中 特指小区（基站信号覆盖的范围） Satellite Com mun icatio n-- 卫星通信 Ch ina Mobile--中国移动 China Telecom--中国电信 China Unicom--中国联通 Opted fiber-- 光纤 Cable--电缆 Man ageme nt--管理 DC--direct curre nt ，直流电 AC--alternati ng curre nt ，交流电 DT--Drive Test ，无线网络路测 CQT--Call Quality Test ，呼叫质量测试（通信里常称为拨打 测试） 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38.
A a bit 一个比特a coil of 一圈 a mix of comflicting information 一个混合的相互冲突的信号 a parallel or series circuit 并联成串联回路 abbreviate 缩写abruptly 突然地absolutely summable 完全可求和 absolute绝对 AC 交流accomplish 实现 accumulate 聚集accurately 精确的 acoustic声学acronym 缩写across the open connection point 开路电压actirated simultaneously 同时被激励activation 激励 activation 激活active devices有源器件 active 有源additional term附加项 adequate 适当地adjacent 相邻的adjustable可调的aeronautics 太空学aeronautics and astronautics 航空航天 aircraft飞行器 alarm 警报器 algebra 代数 algorithm 算法 all or nothing 宁为玉碎，不 为瓦全 allow the solution 求解 alter 转换 alternate current 交流 alternatively 或 者 altitude 海拔 amount 量 ampere 安培 amplification factor 放大系数 amplify放大 amplitude 振幅 an electric combination lock 电子号码锁 an exact relation 直接关系 an initial time 初始 analog ics 模 拟集成电路 analog 模拟 analogous fashion 类似的方式中 analogous 相似的 analog类似的 analytic and numerical solution 解析法和数值法求 解过程 anatomical 解 剖，人体解剖学 angle 角度 anisotropic 各 向异性的 annual 年 antenna天线 apparatus仪器 appliance 工具，设 备，装置，仪表 appointed任命 apprenticed学徒 approach进场 appropriate 适合 approuch 接近地面 approximate近似 arbitrary 任意 are also governed 符合 arise 出现，产 生 arithmetic operations 算 法操作 arithmetic 算术 armed force 军 事力量 artery动脉 artificially 人为 地 assemble 组合 associated with 伴随着 Associative Law 结合律 associative 结合 (率) assume假设 astatic needle 无定向磁针 astatic不定向的 astronautics 太 空航空学 astronomically 天 文学的 astronomy天文学 atmospheric 大气 atom 原子 atomic原子 attenuation衰减 audio音频 automotive vehicle 汽车 available to motivate 可用于驱 动 axial轴 B bachelor 学士 back-of-the-envel ope type analysis 黑箱类型的封 装中 back-of-the-envel ope 粗略 bandwidth带宽 bar 横杠 base 基极 basic operatiom 操作 battery 电池 be analogous to 与…相似 be appropriate for 适合 be conservative 保留 be converted into 转换成 be demited as命名 的为 be evaluated被赋 值/被评估 be expanded被扩展 be factored into 被给予系数 be indicated表示 be isotropic各个 同性的 be present in存在 be reduced to归纳 be referred to in terms of flow 被 比喻做流动的形态 be released 放 开 be subject to易遭 受… be supplemented by 被增加 be symbolically denoted with 用…符号表示 beam（光）束 behavior 性能 beta β bias 偏见 binary digit 二 进制数字 binary 二进制 biological 生物学 biomedical engineering生物医 学工程 bipolar transistor 双极管 bipolar 双极型 blacksmith铁匠 block 阻塞 Boltzman波尔兹曼 bookbinder 装 订商 Boolean algebra 布尔代数 Boolean 布尔 bound 跳跃 boundary condition 边界条件 bounded 有界的 bounding surface 边界局面 brackets 方括号 brightness亮度 broadcast广播 building block结 构单元 but rather to 而是 buzzer 蜂鸣器 by a vector 以 矢量方式
2G 2nd Generation Mobile Communications System 第二代移动通信系统3G/3GMS 3rd Generation Mobile Communications System 第三代移动通信系统3GPP 3rd Generation Partnership Project 第三代合作组织 AAA Authentication, Authorization, Accounting 鉴权、授权、计费 AAL1 ATM Adaptation Layer type 1 ATM适配层类型1 AAL2 ATM Adaptation Layer type 2 ATM适配层类型2 AAL5 ATM Adaptation Layer type 5 ATM适配层类型5 ABR Available Bit Rate 可用比特率 ACL Access Control List 访问控制列表 ACS Add, Compare, Select 加,比,选 ADMF Administration Function at the LIAN LIAN中的管理功能实体 ADT Adaptive Dynamic Threshold 自适应动态阀值 AG Access Gateway 接入网关 AI Acquisition Indicatior 捕获指示 AICH Acquisition Indication Channel 捕获指示信道 ALIM ATM Line Interface Module subrack ATM线路接口插框 AM Account Management 计费管理 AM Acknowledged Mode 确认模式 AMR Adaptive MultiRate 自适应多速率 ANSI American National Standard Institute 美国国家标准组织 AoCC Advice of Charge Charging 计费费用通知 AoCI Advice of Charge Information 计费信息通知
Abbreviation: PAGA-Public address general alarm ; PAS-Public address speaklouder; PAT-Public address telephone station; PAB-Public address Beacon; PAC-Public address control unit; MDF-Distributing Frame; ODF-Optic Fiber Distributing Frame; CCTV-CCTV; CAM-Camera; CAME-Camera Ex proof; IDR-Intrusion detector receiver; IDS-Intrusion detector system; IDT-Intrusion detector transmitter; PBX-Private branch exchange; LAN-Local area network; VSAT-Very small aperture terminal; EMSV-Emergency Mobile Satellite Vehicle RFTS-Remote Fiber Test System IAS-Integration Alarm System HSWR-High-power Short-wave Radio System PCS-Patrolling Control System NVS: Network Video Server DVR: Digital Video Recorder PSTN: Public Switched Telephone Network IAD: Integrated Access Device ODU: Outdoor Unit IDU: Indoor Unit PBX: Private Automatic Branch Exchange MCU: Multi-point Control Unit VTE: Virtual Terminal Environment VSAT: Very Small Aperture Terminal VCS: Video Conference System LNB: Low noise block SMC: Network Management Server for VCS DCC: Data Communication Channels BNC: Bayonet Nut Connector CCTV Closed Circuit Television Systems
光通信中英文专业术语 ADM Add Drop Multiplexer 分插复用器 利用时隙交换实现宽带管理，即允许两个STM-N信号之间的不同VC实现互连，并且具有无 需分接和终结整体信号，即可将各种G.703规定的接口信号(PDH)或STM-N信号(SDH)接入STM-M(M>N)内作任何支路。 AON Active Optical Network 有源光网络 有源光网络属于一点对多点的光通信系统，由ONU、光远程终端OLT和光纤传输线路组成。 APON ATM Passive Optical Network ATM无源光网络 一种结合ATM 多业务多比特率支持能力和无源光网络透明宽带传送能力的理想长远解决方案，代表了面向21 世纪的宽带接入技术的最新发展方向。 ADSL Asymmetric Digital Subscriber Line 非对称数字用户线 非对称数字用户线系统ＡＤＳＬ是一种采用离散多频音ＤＭＴ线路码的数字用户线ＤＳ Ｌ系统。 AA Adaptive Antenna 自适应天线 一种天线提供直接指向目标的波束，比如移动电话的天线，能够随目标移动自动调整功 率等因素，也称为智能天线（SMART ANTENNA）。 ADPCM Adaptive Differential Pulse Code Modulation 自适应脉冲编码调制 一种编码技术，将模拟采样的比特数从8位降低到3到4位，完成传输信号的压缩，ITU-T 推荐G.721 为32位ADPCM定义了一种算法（每秒8000次采样，每次采样采4比特），与传 统PCM编码相比，它的传输容量加倍。
通信英语词汇词组principle 原理 sample采样/样值 scheme方案 , 设计 , 安排 quantiz量化 , 分层 code编码/码 describe 叙述 , 描述 description叙述 , 描述 amplitude幅 , 幅度 binary 二进制的 minimum最小值 , 最小量 maximum最大值 theoretical理论上的 repetition 重复 , 反复 reexamination再审查 , 重考 reduce减少 , 缩小 interchange互换 , 转换 , 相互影响 method方式 , 方法 , 手段 overcome克服 , 打败 , 征服 environment环境 , 周围情况 lightning电光 , 闪电 , 雷电 strike击 , 敲 , 打 spark发火花 , 打火 , 闪 signal-to-noise ratio 信噪比 satellite卫星 terrestrial地球的 , 地面的 , 大地的 parameter参数 , 系数 attenuation衰减 , 衰耗 inherent固有的 , 内在的 assume假设 , 假定 interleave交插 , 交错 , 插接 appropriate适当的 , 合适的 unique 惟一的 , 独特的 reoccur 再发生 , 再次发生 asynchronous 异步的 serial 串行的 , 串联的 ransmission传输 , 发送 interface接口 receive接收 , 收到 synchronize 使 ) 同步 , ( 使 ) 同时或同速进行 period周期 , 循环 , 时期 , 阶段 , 时间间隔 , 时间 clock时钟 transmitter发送器 , 发射机
通信工程专业英语词汇 来源：李涛的日志 动态范围: Dynamic range 频率偏值: Frequency offset 符号率：Symbol rate 码域功率：code domain power 频分多址: Frequency Division Multiple Access 码分多址: Code Division Multiple Access 时分多址: Time Division Multiple Access 沃什码：Walsh code 误码率：Bit Error Rate，BER 帧误码率：Frame Error Rate，FER 循环冗余码：Cyclic Redundancy Code，CRC 时序分析：timing analyze 门限：threshold 非同步模式：Asynchronous Mode 同步模式：Synchronous Mode 邻道功率：A CP D―― Adjacent Channel Power 先进移动电话业务：AMPS---Advanced Mobile Phone Service组织协会： ANSI --- American National Standard Institute 美国国家标准局 BPT --- British Post and Telecommunication Standard 英国邮政与电信标准 CCIR --- International Radio Consultative Committee 国际无线电咨询委员会 CCITT --- International Telegraph and Telephone Consul t ative Committee国际/电报咨询委员会
通信工程专业英语翻译 1数字表示形式的信息 数字表示的主要优势在于普遍性的表示形式。由于任何形式的媒体，将它的文本、图像或声音，唯一的形式，相同的方式和相同类型的设备最终处理结果序列中的位数，所有种类的信息编码。此外，转换的数字信息是免费的错误而模拟转换介绍扭曲和噪音。 1.存储 相同的数字数据存储设备可用于所有的媒体。唯一的区别可能在于大小要求。仍图像和视频的议案要求大量比文本或图形。声音也苛刻虽然不如成像。因此，适当的数字设备可能是必需的例如光盘只读记忆(光盘)。但关键的一点是，单个类型的数字设备可能会存储所有种类的信息。 2、传输 任何能够携带bits 的数据通信系统具有传输任何多媒体数 字信息的潜力。因此，单一的通信网络，支持数字传输可以在理论上，设想。这一概念称为是旨在整合所有信息传播媒介的运输设施的综合的服务数字网络。困难可能出现的某些应用程序，特别是要求那些需要尊重高保真的数字信号的时间依赖。 甚至当潜在的整合不同类型的单个通信系统上的信息不利用此漏洞，数字与模拟传输的好处很多。第一，数字信号是传输噪声比模拟信号不太敏感。第二，再生的信号，是加强减毒的信号，该进程的更容易。第三，可以实现错误检测和更正。第四，加密的信息也是更容易。
3.处理 像所有的信息存储在计算机上，它可以将处理、分析、修改、更改或辅之以计算机程序的任何其他数据一样。这可能是潜力在哪里的最高水平。 可能会试图识别语义内容（语音、手写、表单和模式识别）。高级的内容识别的一个示例是削减议案视频自动识别和索引视频序 列的检测。 数据结构，链接使用指针之间信息的元素，可能会创建更快和灵活的检索。 通过剪切和粘贴函数来创建monomedia 强大编辑（例如声音只）或多媒体文档是可能。 可去除噪音或错误的改进信息的质量，按所示的旧的乙烯基记录数字化来创建高质量音频光盘。 信息相似但创建通过不同类型的流程─ 如议案影像合成的 电脑和摄像机拍摄到的视频五月将混在一起。 总结： 数字表示允许不同的信息类型的存储在同一台设备上。此外可通过单个数字网络传输信息。同样地，当数字化，所有形式的信息可能会都处理由计算机程序，用于编辑、质量改进或信息的意义的认识。 4.缺点是连续信息的数字表示形式 信息的数字表示形式的主要缺点在于编码失真。第一次采样然后量化和编码采样的值的过程介绍了扭曲。这样做的结果是，生成数字-模拟转换后，提交给最终用户的信号已被完全等同于原始信号的可能性微乎其微。增加的采样率和相乘的代码示例使用的位数减少失
一、土建专业英语单词 1、建筑材料 cement 水泥 gravel 石子 sand 砂子 water 水 reinforcing steel bar 钢筋 anchor bolt 地脚螺栓 nut 螺母 template 定位模板 grounding Material 接地材料 angle steel 角钢 flat iron 扁铁 cement mortar 水泥砂浆 cement slurry 水泥浆 crushed gravel 碎砾石 cement substance 粘合质 dough 胶 cementation 胶结 early strength admixture 早强剂connecting bolt 连接螺栓construction paint 构造用涂料 coolant 冷却剂 diluents 稀释剂 form release agent 脱模剂 cork 软木 cover plate 盖板 bolt 螺栓 double iron 工字钢 2、机械及工具 crab 起重绞车 grab 挖掘机 mix machine 搅拌机 vibrating Spear 振动棒 tamping Machine 打夯机 shovel 铁锹 hopper 料斗 meter 米尺 water pipe 水管（透明软管，测平整度用） erection crane 吊车 engine 发动机 conveyor 传送带 corbel piece 支架cord 绳索 pulley 滑轮 guy cable 拉索 tube 管 spring 弹簧 joint 接头 electric tools 电动工具 electric wire 电线 electric welding 电焊 electricity 电气 electric lamp 电灯 3、建筑构件 rigid body 刚体 plate 板 foundation pad 基础垫层 foundation plate 基础板 drop ceiling 吊顶 rectangular plate 矩形板 circular plate 圆板 bar 杆 beam 梁 foundation balk 基础梁 simply supported beam 简支梁overhanging beam 外伸梁 cantilever [beam] 悬臂梁 curved beam 曲梁 statically determinate beam 静定梁statically indeterminate beam 超静定梁continuous beam 连续梁 I-shape beam 工字梁 Timoshenko beam 铁摩辛柯梁 web 梁腹 beam-column 梁柱 column 柱 4、施工过程常见词汇 orientation and定位放线 foundation Ditch基坑 excavate Pit基坑开挖 back-check of pit基坑检查 level off of pit bottom坑底平整 lean concrete （Cast in situ）垫层（浇筑）colligation for steel bar钢筋绑扎 anchor bolts of Fixing地脚螺栓固定formwork of Fixing and blackout 模板支
1.WLAN--Wireless Local Area Network, 中文名叫:无线局域 网 2.WiFi--Wireless Fidelity，是一种无线联网的技术（俗称：无线 宽带） 3.DT--Drive Test，路测，是无线网络优化数据采集的方法。 4.CQT--Call Quality Test，呼叫质量测试或定点网络质量测试 5.GPS--Global Positioning System（全球定位系统）的简称 6.KPI--Key Performance indicator 关键性能指标 7.SIM卡 --Subscriber Identification Module 用户身份鉴别模 件 8.FTTH--Fiber To The Home 光纤到户 9.Channel--海峡, 频道, 通道，通信中指信息传输的通道（信道） 10.Frequency--频率，通信中特指无线信号的频率 11.Mobile station--移动的设备，移动台，特指手机 12.Base station--基站，用于接收和发送手机信号 13.Short message--短消息，短信 https://www.doczj.com/doc/3d5032424.html,munication--通信 https://www.doczj.com/doc/3d5032424.html,work--网络 16.Mobile community--移动通信 17.4G--G是generation（一代）的简称，特指第四代移动通信技 术 18.Protocol--协议，网络之间互联遵循的规范
19.Online--在线的，名词可指网游 20.Online banking--网上银行 21.Wireless--无线，通信领域范畴指的是无线电或无线电波 22.Broadcast--广播 23.Cell--细胞；电池；蜂房的巢室；单人小室。移动通信网络中 特指小区（基站信号覆盖的范围） 24.Satellite Communication-- 卫星通信 25.China Mobile--中国移动 26.China Telecom--中国电信 27.China Unicom--中国联通 28.Opted fiber--光纤 29.Cable--电缆 30.Management--管理 31.DC--direct current，直流电 32.AC--alternating current，交流电 33.DT--Drive Test，无线网络路测 34.CQT--Call Quality Test，呼叫质量测试（通信里常称为拨打 测试） 35.Acceptance of work--工程验收 36.Project startup --工程启动 37.Preliminary inspection--初验 38.Construction quality--工程质量
通信类常用的英语词汇 ? （表记录的）插入修改添加删除InsertModify, updateAddDelete （拨号后）拨号音不断Non-stop Dial Tone （程序,进程）调度Dispatch （程序安装的）序列号Serial Number SN （单板）不在位Not-in-position （单板等）插入/拔出Plug/Unplug （发货）附件，辅助设备Accessories （话务员）为分机用户代拨外线Dial Out For An Extension （话务员帮）接通（电话）Put Through （计算机上）主板,母板Mother-Board （界面）刷新Refresh (开局)调测现场Commissioning Site (判定)门限Threshold (软件)补钉Patch (试运行前的)开通调测Commissioning PG （相）邻（信）道干扰Adjacent-channel interference (移动电话)交接,越区切换Handover (用户线)主配线架Main Distribution Frame MDF (中继的)监听、插入及强拆Monitor, Intrusion and Forced Release 1800MHz频段的数字蜂窝系统Digital Cellular System at 1800MHz D CS1800
2B1Q线路码Two Binary-To-One Quaternary Line Code 2B1Q 2M数字分支板2Mb/s Digital Branching Board DB2M 3 型不对称数字用户线ADSL-3 3阶高密度双极性码High Density Bipolar of Order 3 HDB3 50W粗缆10Mb/s基带以太网10Base 5 50W细缆10Mb/s基带以太网10Base 2 500伏兆欧表（测绝缘电阻用500V Meg-ohmmeter (used to measure the insulation resistance) 5合1拼板5 In 1 Board a. (窗口)缩放 b. 放大 c. 缩小 d.最大化 e.最小化ZoomZoom inZoom o utMaximizeMinimize a.板，祼板 b.板卡，单板BoardCard a.本地网 b.本地通讯网 c.局域网Local NetworkLocal Communication N etworkLocal Area Network LNLCNLAN a.本局（交换局） b.本局（交换、传输等通用）Home exchangeHome of fice a.处理（呼叫，通信） b.处理（问题、意外） c.对待ProcessingHandlingTr eatment a.单选框 b.复选框 c.组合框Button boxCheck boxCombo box a.对话处理 b.会话处理Dialogue HandlingSession processing DHA a.对接 b.互通InterconnectionInterworking a.高清晰度电视 b.高分辩率电视High Definition TelevisionHigh Resolu tion Television HDTV a.挂起 b.恢复（被挂起的）SuspendResume RES a.火线 b.零线Live LineZero Line
A amplitude 振幅attenuation 衰减 ************************* ********an electric combination lock 电子audio 音频 a bit —个比特号码锁automotive vehicle 汽车 a coil of 一圈an exact relation 直接关系available to motivate 可用于驱动 a mix of comflicting information an initial time 初女台axial 轴 一个混合的相互冲突的信号analog ics 模拟集成电路 B a parallel or series circuit 并联analog 模拟******************************* 成串联回路analogous fashion 类似的方式中bachelor 学士 abbreviate 缩写analogous 相似的back-of-the-envelope type analysis abruptly 突然地analog 类似的黑箱类型的封装中 absolutely summable 完全可求和analytic and numerical solution 解back-of-the-envelope 粗略 absolute 绝对析法和数值法求解过程bandwidth 带宽 AC 交流anatomical 解剖，人体解剖学bar横杠 accomplish 实现angle 角度base 基极 accumulate 聚集anisotropic 各向异性的basic operatiom 操作 accurately 精确的annual 年battery 电池 acoustic 声学antenna 天线be analogous to 与…相似 acro nym 缩写apparatus 仪器be appropriate for 适合 across the open connection point appliance 工具，设备，装置，仪表be conservative 保留开路电压appointed 任命be converted into 转换成 actirated simultaneously 同时被激励apprenticed 学徒be demited as 命名的为 activation 激励approach 进场be evaluated 被赋值/被评估 activation 激活appropriate 适合be expanded 被扩展 active devices 有源器件approuch 接近地面be factored into 被给予系数 active 有源approximate 近似be indicated 表示 additional term 附加项arbitrary 任意be isotropic 各个同性的 adequate 适当地are also governed 符合be present in 存在 adjacent 相邻的arise 出现，产生be reduced to 归纟纳 adjustable 可调的arithmetic operations 算法操作be referred to in terms of flow aeronautics 太空学arithmetic 算术被比喻做流动的形态 aeronautics and astronautics armed force 军事力量be released 放开 航空航天artery 动脉be subject to 易遭受… aircraft 飞行器artificially 人为地be supplemented by 被增加1 alarm警报器assemble 组合be symbolically denoted with algebra 代数associated with 伴随着用…符号表示 algorithm 算法Associative Law 结合律beam （光）束 all or nothing 宁为玉碎，不为瓦全associative 结合（率）behavior 性能 allow the solution 求解assume假设beta B alter 转换astatic needle 无定向磁针bias偏见 alternate current 交流astatic 不定向的binary digit 二进制数字 alternatively 或者astronautics 太空航空学binary 二进制 altitude 海拔astronomically 天文学的biological 生物学 amount 量astronomy 天文学biomedical engineering 生物医学工ampere 安培atmospheric 大气程 amplification factor 放大系数atom 原子bipolar transistor 双极管 amplify 放大atomic 原子bipolar 双极型