◆The distance between the bottom of the hull and the waterline is called ____.
◆
transverse shift in weight is ____.
首尾吃水差 D. flotation
◆When a ship in loaded condition floats at arbitrary water line, its
◆The displacement of a ship is to the total weight, all told, of the
◆’s hull is equal to or greater than the displacement tonnage, the ship will ____.
A. require ballast added to only the port side tanks
B. be down by the head
C.
◆You may improve a vessel’s stability by ____.
D. keeping at least one fuel tank empty for slops
◆The stability of a vessel is normally the greatest when all fuel and water tanks are full because the ____.
◆The depth of the ship below waterline measured vertically to the lowest part of the hull is called .
◆
engine and pinion gear
◆When used with reversing reduction gears, medium-speed diesel engines should be bolted to their foundations with fitted bolts at the drive end and clearance bolts in other locations. This is done to .
A. maintain alignment when the ship’s hull is working in heavy seas
B. ensure engine vibrations
◆What determines the number of events occurring in a cycle of operation
A. Crankshaft Distance a piston travels during
◆Gas turbines differ from steam engines in that _____.
◆The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the .
A. method of supplying air
B. cooling valve operating mechanism
◆Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?
A. Compression must be low for effective spark ignition
be low for required horsepower and torque generation
pre-ignition
◆Large, slow speed, two-stroke marine diesel engines offer the advantages of the following except _________.
A. burning poorer quality, cheaper fuel
B. providing large power
C. being
◆
A. Because in this way the piston can be withdrawn downwards.
B. The engine can
slow speed, two-stroke marine diesel engines are directly coupled
◆
usually used to cater for astern thrust?
A. a reversing a fixed pitch propeller
D. a clutch
◆Medium speed engines have the following advantages except___________.
engines of later type are capable of burning low quality heavy fuel
◆Power is defined as the ____.
◆Mechanical energy in transition is referred to as ____.
◆Which of the following terms could be applied to the simple definition “the energy of motion”? .
A. Electrical energy
B. Thermal energy.
C. Potential
◆The most important factor in engine performance is the actual power output
horsepower
◆The is the power available at the output shaft of the engine and can be measured using a torsionmeter or with a brake.
◆
the engine under full load
◆A four cylinder, four-stroke/cycle, single acting diesel engine has a 740mm bore and a 1500mm stroke. What indicated power will be developed if the
◆A seven cylinder, two-stroke/cycle, single acting diesel engine with a cylinder indicated horsepower calculated as 1350 kW and brake horsepower measured at 7466kW has a mechanical efficiency of _____.
◆
a 650 mm bore and a 1400 mm stroke, effective pressure is 30kg/ cm2 at a speed
◆
◆，how many tons per hour will it burn at 18 knots?
of a cylinder is determined by the diameter of the piston and the .
B. volume of the clearance space
C. weight of piston
◆According to the principle of four-stroke diesel engine, what is the
to the principle of two-stroke diesel engine, what is the number
◆of the brake horsepower to the indicated horsepower of a diesel engine is its ____.
volumetric efficiency
◆“AMIDSHIPS”
of a vessel D. across the ship, at right angles to the fore-and-aft centerline
◆____ power is the power developed within the cylinder and can be measured by an engine indicator.
◆
specified MCR: Q = BS×Pe×24×10-3 , Q = Feed rate at specified MCR BS = Basic Setting, see Item 4.3 Pe = Effective engine power at specified MCR Engine Type Pe at Specified MCR Basic Setting at Specified MCR 6L60MC 15600 1.0 6S80MC
◆In crosshead engines in good condition the cylinder oil consumption may usually be .
◆In a diesel engine, the
◆For a two-stroke engine will be considerably lighter. _______________ the complicated valve operatin
A. Nor the two-stroke engine
◆Modern marine diesel engines using mechanical fuel injection, operate
entirely constant volume
◆Most practical diesel engines today operate on cycle which is a combination of the Diesel and Otto cycles. In this process, compression ignition ______
◆An indicator card or pressure-volume diagram, shows graphically
the______.
A. compression ratio of the engine
B. volume of the engine
C. relationships
A. obtain injection increase combustion pressure
◆Turbulence of the compressed air charge in a diesel engine cylinder increases ______.
compression pressure
◆Which of the following relationships should occur between the temperature
Higher temperatures
compression ratios. D. Higher compression ratios create lower temperatures.
◆Because the top of the connecting rod swings about the pin and changes direction each time the piston reaches mid stroke, the relative speed between the bearing and pin at mid stroke is zero, ______to a maximum as the piston approaches top or bottom dead center and then _______back to zero again as the
◆Which of the factors listed has the greatest effect on the mechanical efficiency of a diesel engine?
Mechanical
◆The purpose of an interference angle in a diesel engine exhaust valve is to _____. I. Break up seat deposits II. Work in conjunction with valve
valve openings in a diesel engine cylinder head are made as large as practical to .
A. increase back pressure during the exhaust process
B. facilitate periodic
replacement of the
D. reduce tension on valve springs
◆Many diesel engine exhaust valves are being constructed with hollow stems filled with sodium in order to .
A. provide added wear protection against today’s corrosive quality of fuel
B.
reduce the overall
◆The size of the exhaust valve opening is .
engine if it is turbocharged D. of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine
◆Diesel engine mufflers reduce noise by ________.
◆the engine exhaust noise by .
A. passing the exhaust through long head pipes
B. diffusing
and camshaft pushrod. D. The clearance between the rocker arm and valve pushrod in either warm or cold state
◆
pressure at all times D. approximately equal to atmospheric pressure at all times
◆Why is the ring belt narrower in diameter than the skirt of a piston
To seal
surface for oil cooling. D. To provide an additional strength for the crown and lower structure.
◆Many cast iron pistons are designed with heat dams, which serve to .
help
heat of compression to prevent combustion knock
◆To facilitate early ring seating of newly installed piston rings, while
the cylinder surface is honed to the smoothest
of the ring face slightly protrudes beyond the cast iron edges D. rings with increased back clearance are provided
◆The main reason for using bimetallic piston rings is to ________.
____.
rate of aluminum
◆Oil control rings used in two-stroke/cycle diesel engines are located near the bottom of the piston skirt in order to .
A. increase the liner area covered by the oil film
B. maintain an oil film on
scuffing is
◆Insufficient end clearance on newly fitted piston rings in a diesel engine will cause the rings to _______.
in the most worn part of the cylinder when the rings expand C. wear eccentrically on the side opposite the end gap D. overheat and jam at the top center on the combustion stroke
◆If the piston ring gap remains insufficient when installing new rings, you should ____.
A. install oversized rings
B. hone the cylinder liner
◆The purpose of piston ring end clearance is to _______.
A. allow the combustion gases to press the ring down on the land
B. allow the
it against the cylinder liner
◆Which of the listed cylinder liner surface conditions indicates proper lubrication?
A. Dull black Thin layer of lacquer D. Thick oily film.
◆One of the advantages in the use of a dry liner over a wet liner is _______.
A. it is fitted with neoprene O-ring seals
B. the honing process makes it easier
◆
A. maintaining a constant rack maintaining
loads on the main bearings D. prevent the engine from operating at critical speed
◆Vibrations from diesel engines and engine driven equipment are isolated from the hull structure by ______.
◆The amount of fuel delivered by a unit injector is controlled by the____.
◆In a unit injector, an upper helix and lower helix are machined in the lower part of the plunger for _________.
B. positioning the control
plunger stroke
◆The main task of the HP valve in the HP fuel oil pump is______.
adjust the ignition timing.
◆The amount of fuel delivered for each cycle must be in accordance with the engine load, and the same quantity of fuel must be delivered to each cylinder for each power stroke at that load Which of the following statements describes this requirement?
A. Proper timing D.
Suitable atomization rate
◆A mixture of 45%cetane and 55% alpha-methyl-naphthalene is found to have the same ignition delay as a sample of diesel oil. The sample can be described as having a ____.
number of 45
◆If the dispersant type lubricating oil being used in a diesel engine is black, the oil_____ .
C. must be
single acting, four-stroke/cycle diesel engine than in a two-stroke/cycle
splash feed system is used on tow-stroke engine C. four-stroke engines usually utilize a heavier grade of oil than two-stroke engines D. two-stroke engines usually consume less lube oil than four-stroke engines
◆Governors used on diesel engines to limit the load must be equipped with ______.
◆Heat damage to fuel injection nozzles on small high-speed diesel engines, can be prevented by ____.
A. employing fuel oil as a cooling medium
B. preventing hard carbon deposit on
◆If the diesel engine fuel injection timing is changed to delay the start
◆Your indicator diagram from one of the main engine cylinders is shown. What kind of steps do you think is necessary to rectify the failure?
◆Your indicator diagram is as shown. What kind of steps do you think are
viscosity/fuel preheating. D. Replace the fuel valve.
◆If the valve lash on a diesel engine is set improperly, which of the following statement represents the most serious problem that can happen?
Too much
through loss of compression.
◆A loud clicking noise occurring from within the valve compartment of an operating diesel engine would indicate ______.
D. weak rocker arm springs
◆A seven-cylinder engine is supplied by four rail units, whereby_____.
A. one rail supplies two cylinder units and three rails supply five cylinder units
B. two rails each supply two cylinder units and the rest rails supply three
are integrated into the rail units away from the heat of the cylinder heads, resulting in _____.
allowing for short
◆An explosion or flareback could occur in a boiler if ______.
A. too much excess air were supplied for combustion
B. the boiler firing rate
◆Improper atomization can be caused by ______.
◆When the rate of heat transfer through tube walls is so reduced that the metal becomes overheated, which of the following conditions will result in the boiler?
◆
many vessels by using ________.
B. variable speed supply
◆It is usual to identify the fluids in pipes by bands of paint at intervals, and the engineer should familiarize himself with the code in use. According to the above sentence, which of the following statements is tree?
A. People can know the types of fluids in pipes by feeling
very well.
◆A compound gage is typically installed on the ____.
discharge line from an air compressor D. chemical feed tank of an evaporator
◆The flame screens installed on sewage system tank vents prevent explosions by ______.
C. absorbing any flammable vapors in the
from entering the tank
◆If the whole pump arrangement is normal, what can be used to explain the insufficient capacity?
◆After starting a before opening
alternatives.
◆In refrigeration systems, which type of contamination will the
◆At which point in the Separating System shown is the oil concentration of 15 PPM allowed?
◆The oily water separator used on board should enable a degree of purity
◆The time of discharging oil is short, but oily water separator discharges oil frequently. The possible reason is .
the coarse strainer
is worn seriously andvolumetric D. bilge suction valve is clogged
◆The function of coalescer in the 2nd chamber is to _____________.
◆Where is the best position of the oil/water interface in these figures?
◆Hydraulic control check valve can be used to _____in the marine hydraulic mechanism.
conditions C. permit oil flow with reversed direction D. act as relief valve
◆Which of the valves listed is NOT considered to be a hydraulic system directional control valve?
Two-position valve
◆
◆The symbol at right side represents_____
◆While standing watch underway in the engine room, upon failure of the
normal power supply, the emergency generator is placed on the line by the _______.
A. main bus tie line connection feeder
◆On a switchboard, if all three ground detection lamps remain burning at half intensity when the test button is depressed, which of the listed conditions
◆The ground indicating light on the main electrical switchboard is indicating a ground. The best procedure for locating the grounded circuit is to _____.
A. trace the circuit paths while looking for burned spots
B. check circuit
◆A current-carrying conductor makes accidental contact with a wiring conduit. This will be indicated by a _______.
◆When used for taking resistance measurements, a volt-ohm-milliammeter
A. a hand cranked the current in the
◆Undervoltage trips are frequently installed on switchboard circuit breakers to trip ________.
A. out generators in the event of severe arcing or sparking
B. out generators when there is reversal of power in the main circuit
C. the breaker if the generator
to
at a very low voltage C. trip the load off the motor in case of fire D. protect personnel from low voltage shocks
◆A grounded switch or cable will be indicated by a megohmmeter reading of _______.
in the low range
◆When mixing electrolyte for a lead-acid storage battery, ________.
◆
A. passing an alternating electric current through the
the above
◆The state of charge of a lead-acid battery is best indicated by the ________.
◆How can we check if a lead-acid type battery is fully charged or not?
Measure the temperature of the electrolyte D. Measure the level of the electrolyte
◆Violent gassing from a lead-acid battery while it is being charged, indicates that the ____.
high
◆When a battery-charging panel is being used, the batteries will discharge if ______.
A. DC voltage is the voltage fluctuates
D. too little current is supplied
◆Nickel-cadmium storage batteries are superior to lead-acid batteries because they ____.
mounting space D. all of the above
◆When the electrolyte level of a lead-acid storage battery has decreased
the level should be reestablished by adding ______.
water
◆When a battery is continuously exposed to low temperatures, the best procedure to keep it from freezing is to _________.
◆Which of the listed procedures should be carried out to prevent moisture damage to electrical apparatus during extended periods of idleness?
A. Fill the silica gel around
the Cover the equipment
◆You are reconnecting a three-phase induction motor to the supply line. To prevent possible damage to the load, due to the wrong direction of rotation, you should ______.
A. connect the motor and then use the ‘jog’ button to determine the direction of rotation
B. connect the phase indicator to the motor leads, rotate the motor
by hand and then connect to the supply voltage C. connect the phase indicator
◆A feedback is an input .
A. which governs the state of a variable
B. which
◆A U-tube manometer will indicate _____acting on the top of two legs.
℃ into degree of Fahrenheit?
A. 0℉.
B. 18℉.
C. 32℉
◆The alarm system for an engine order telegraph uses small selsyn motors attached to the indicators. The alarm sounds when the rotors are _______.
not
current is flowing, and the relays are closed
◆In which of the following areas of a crosshead engine is a permanently connected fire extinguishing system required?
A. Exhaust manifolds in excess of eight inches in diameter.
B. Crankcases having a gross volume in excess of 21
◆When using a dry chemical fire extinguisher to fight a fuel oil fire, you should _______.
before starting to fight the fire
◆When using a dry chemical type fire extinguisher in a windy location,
◆
surrounding a vessel tied to the pier, is to use ______.
A. water fog dry
◆If circumstances to oil burning in the bilges of the engine room?
to spread the foam over the surface. C. The foam should be applied to the centre of the fire. D. The foam should be aimed at about 45 degrees upwards so that it can drop onto the fire.
◆A lube oil sample taken from the main engine lube oil system has a dark
two widely different viscosities
◆What is true of voyage repair?
A. voyage repair is a major repair
schedule breakdown.
◆What is NOT true of annual repair?
A. It is carried out once a year.
B. It is a
◆Which of the following is NOT a mandatory requirement part of the
A. reporting steps to control a discharge D. national and local coordination
◆A new four-category categorization system for noxious and liquid substances, is Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a major hazard to either marine resources or human health and, therefore, justify the
substances, is Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a hazard to either marine resources or human health and therefore justify a limitation on
◆
substances, is Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a minor hazard to either marine resources or human health and therefore justify less stringent restrictions on the quality and quantity of the discharge into the marine environment.
◆
substances, is Substances which have been evaluated and found to fall outside Category X, Y or Z because they are considered to present no harm to marine
resources, human health, amenities or other legitimate uses of the sea when
73/78 contains of _____.
◆Annex Ⅱ
◆Annex III of MARPOL 73/78 contains regulations for the prevention of _____.
pollution
◆Annex IV of MARPOL 73/78 contains regulations for the prevention of _____.
A. pollution by garbage from ships
B. pollution by noxious liquid substances
_____.
◆Annex Ⅵ of MARPOL 73/78 contains regulations for the prevention of
pollution by sewage from ships
◆MARPOL73/78 consists of six separate annexes, which of the following
Ⅵ D. Annex I and Ⅴ◆
annexes are voluntary?
A. Annex I , Ⅱ, III and Ⅳ
B. Annex Ⅱ, III, Ⅳ, and Ⅴ
Ⅴ and Ⅵ
◆Which one is not required to comply with the INF Code?
A. Irradiated nuclear fuel
B. High-level radioactive
D. Plutonium.
◆Which code a ship that carries dangerous goods should comply with?
◆
code?
A. Code for the Safe Carriage of Packaged Irradiated Nuclear Fuel, Plutonium and High-Level Radioactive Wastes on Board Ships
B. the International Maritime
精读二作业(3) 翻译题： I.Translate the following phrases into English: 1．面临诱惑be faced with the temptation 2. 对学生们过分严厉be hard on the students 3. 认为某事当然Take something for granted 4. 编智力测试题make up the intelligence tests 5. 表扬的温暖阳光The sunlight of praise 6. 靠吃野菜生活live on wild plants 7. 对老师的话不予理睬shrug off the teacher’s words 8. 转达一句赞美的话pass on a compliment II.Translate the following sentences into English: 1.据说，他们为新建一所山村小学开展筹款运动。 It is said that they launched a campaign to raise money for a mountain village primary school. 2. 如果你总是偷东西，肯定不会有好下场的。 If you keep stealing you will surely come to a bad end. 3不要想当然地认为大学毕业生就什么都能做。 Don’t take it for granted that college graduates can do everything in all aspects
h Ecology 生态学individuals 个体population 种群communities 群落ecosystems 生态系统 behavioral ecology 行为生态学physiological ecology 生理生态学evolutionary ecology 进化生态学molecular ecology 分子生态学fitness 适合度 natural selection 自然选择adaptation 适应genotype 基因型phenotype 表型 phenotypic plasticity 表型可塑性offspring 后代genes 基因 nongenetic factors 非遗传因素not inherited 不遗传conditions 条件resources 资源 environmental variation 环境变异internal regulation 内调节homeostasis 稳态 negative feedback 负反馈tolerance 耐受性temperature 温度 not depletable 不能耗掉solar radiation 太阳辐射decouple 退耦niche 生态位habitat 栖息地 multidimensional niche space 多维生态位空间 Fundamental niche 基础生态位Realized niche 实际生态位Prey 猎物Foraging 觅食Dimension 轴或维 Global wind pattern 地球的风型The circulation of oceans 洋流Rain 降雨 Havoc ['h?v?k] 灾害 Hurricane 飓风Latitude 纬度 Irradiance [i'reidi?ns,-si] 辐射度 Summer solstice 夏至Winter solstice 冬至 Adiabatic cooling 绝热冷却Scale 尺度 Coriolis effect 科里奥利效应 Intertropical convergence zone 热带辐合带 Jet streams 急流Albedo 反照率 Gulf stream 墨西哥湾流Lee of a continent 背风面Upwelling 上涌流 Adiabatic lapse rate 绝热温度递减率 Inversion 逆温 Heat of condensation 凝结热Heat 热 Temperature profiles 温度剖面Relative humidity 相对湿度Saturated water 饱和水water vapor 水蒸汽microclimate 微气候 thermal ['θ?:m?l]conductivity 热传导 chemical properties of water 水的化学特性 penetration of light through water 光线穿透水 Energy transfer and water phases 能量转化和水相Deplete 耗竭Ions 离子 Electropositive 正电性的Electronegative 负电性的Beer’s law 比尔定律Heat capacity 热容量Maximum density 最大密度Latent heat of vaporization 增发潜热
一、单项选择题(只有一个选项正确，共40道小题) 1. –What time is it? –____________________. (A) My watch keeps good time (B) My watch is five minutes fast (C) My watch says three o’clock (D) I say three o’clock 正确答案：C 解答参考：[第三单元] 本题问句是“现在几点钟”，C项“我的表是三点钟”。A项“我的表走时准确”，B项“我的表快五分钟”，D项“我说是三点钟”都不符合习惯表达法。 2. –Could you tell me the time, please? –____________________. (A) Yes, I can (B) No, I can’t (C) It’s four thirty (D) It’s Friday 正确答案：C 解答参考：[第三单元]C 本题仍是问时间，回答应该直接告诉对方时间，故C项正确。 3. –What day is tomorrow? –Today is Tuesday. So it’s________. (A) Monday (B) Wednesday (C) Thursday (D) Saturday 正确答案：B 解答参考：[第三单元]B 本题问“明天是星期几”，回答“今天是星期二，所以明天是星期三”。 4. –When is your birthday? –____________________. (A) It’s April 18th (B) It’s Sunday (C) It’s August
K-对策者 K-strategistis n维超体积资源空间 n-dimensional hyper-volume n维生态位 n-dimensional niche Raunkiaer定律 Law of Frequency r-对策者 r-strategistis 奥陶纪 Ordovician period 白垩土草地 chalk grassland 斑块 patch 斑块性 patchiness 斑块性种群 patchy population 半荒漠 semi-desert 半矩阵或星系图 constellation diagrams 伴生种 companion species 饱和密度 saturation density 饱和期 asymptotic phase 保护哲学 conservation philosophy 北方针叶林 northern conifer forest 被动取样假说 passive sampling hypothesis 本能 instinct 本能行为 instinctive behavior 避敌 avoiding predator 边缘效应 edge effect
变异性 variability 标志重捕法 mark recapture methods 标准频度图解 frequency diagram 表现型适应 phenotypic adaptation 并行的 simultaneous 并行同源 paralogy 捕食 predation 不重叠的 non-overlapping 残存斑块 remnant patch 残余廊道 remnant corridor 操作性条件作用 operant conditioning 草原生态系统 grassland system 层次性结构 hierachical structure 产卵和取食促进剂 oviposition and feeding stimulant 产业生态学 industry ecology 长日照植物 long day plant 超体积生态位 hyper—volume niche 成本外摊 externalized cost 程序化死亡 programmed cell death 尺度效应 scaling effect 抽彩式竞争 competive lottery 臭氧层破坏 ozone layer destruction
计算机专业英语第3次作业 1.machine languages are the most basic type of programming languages and can be understood undirectly by a computer. 错误 2.High-level languages are programming languages that must first be translated into a machine language before they can be understood and processed by a computer. 正确 3. C, C++, PASCAL, and FORTRAN is__D___? A：Assembly languages B：machine languages C：Low-level programming languages D：high-level languages 4.In machine languages, instructions are written as sequences of __A__? A：1s and 0s B：0123456789 ._____is a means of connecting a number of computing elements together. B A：WAN B：LAN C：MAN 6.The internet grew out of a computer network called__C__? A：LAN B：WAN C:ARPANET 7.https://www.doczj.com/doc/e213785491.html,/downloads/pryearbk.asp.The http indicates__C__? A：the hostname B：files C:PROTOCOL https://www.doczj.com/doc/e213785491.html,puter crime can take various forms, including____? A：Damage B：Theft C：Manipulation 正确答案：ABC 9.Security measure consist of______? A：encryption B：restricting access C：anticipating disasters
步京侄宛a琴 《专业英语》课程作业 学生姓名____________________________ 学号 __________________________ 院系 _________________________ 专业 __________________________ 任课教师____________________________
二0一五年六月 一、英译中(英文科技资料翻译) 原文： An operating system is the software which acts as an interface between a user of a computer and the computer hardware.The purpose of an operating system is to provide an environment in which a user may execute program. The primary goal of an operating system is thus to make the computer system convenient to use. A secondary goal is to use the computer hardware in an efficient way. We can view an operating system as a resource allocator. A computer system has many resources which may be required to solve a problem: CPU time, memory space, , input/output(I/O) devices, and so on.The operating system acts as the manager of these resources and allocates them to specific programs and users as necessary for their tasks. Since there may be many, possibly conflicting, requests for resources, the o/s must decide which requests are allocated resources to operate the computer system fairly and efficiently. Multimedia means, from the user ' perspective, that computer information can be represented through audio and/or video, in addition to text, image, graphics and animation . The integration of these media into the computer provides additional possibilities for the use of computational power currently available (e.g., for interactive presentation of huge amounts of information ). Furthermore, these data can be transmitted though computer and telecommunication networks, which implies applications in the areas of information distribution and cooperative work.Multimedia provides the possibility for a spectrum of new applications, many of which are in place today. A multimedia system distinguishes itself from other systems through several properties. We elaborate on the most important properties such as combination of the media, media-independence, computer control and integration.Not every arbitrary combination of media justifies the usage of the term multimedia. A simple text processing program with incorporated images is often called a multimedia application because two media are processed through one program.But one should talk about multimedia only when both continuous and discrete media are utilized.A text processing program with incorporated images is therefore not a multimedia application. An important aspect of different media is their level of independence from each other. In general, there is a request for independence of different media, but multimedia may require several levels of independence. On the one hand, a computer-controlled video recorder stores audio and video information, but there is an inherently tight connection between the two types of media. Both media are coupled together through the common storage medium of the tape. On the other hand, for the purpose of presentations, the combination of DAT recorder (Digital Audio Tape) signals and computer-available text satisfies the request for media-independence. Early computers were(physically) very large machines run from a console.The programmer would
湖南文理学院学院2017-2018学年度第一次作业 考核课程： 《计算机专业英语》 学生所在院系： 国际学院 年 级： 2017 姓名： 刘飞 班级： 网工17102班 学号： 201719040213 一、Give out the full names for the following abbreviations(写出下列缩写词的全称)（２0%） EEPROM_Electrically Erasable Programmable Read-Only Memory_ CPU ___Central Processing Unit____________________________ ALU ___A rithmetic/Logic Unit _______________________________ IT ___Information Technology___________________________ WWW___World Wide Web_________________________________ RAM ____Random Access Memory_________________________ PNP _____Plug-And-Play__________________________________ OS _____Operating System_______________________________ HTML____Hyper Text Markup Language______________________ TCP ____Transfer Control Protocol_________________________ SSI _____Small-Scale Integrated circuit_____________________ DRAM____Dynamic Random Access Memory________________ CA(M)D___Computer Aided Design__________________________ CAI_______Computer Aided Instruction______________________ 256000000__two hundreds and fifty six million________________ 25600000___twenty five million and six thousands_____________ SRAM_____Static Random Access Memory___________________ CAT_______Computer Aided Text____________________________ CA Ｍ______Computer Aided Made(Manufacture)_______________ Ｉ／Ｏ_____Input/Output__________________________________ 二、Match the following words and expressions in the left column with those similar in meaning in the right column( 将)（10%） 1. memory unit a. 半导体存储器 2. high density b. 主存
一、 1.Emerging organic contaminant removal depending on primary treatment and operational strategy in horizontal subsurface flow constructed wetlands: Influence of redox. 20 在水平潜流湿地中基于初级处理和运行方式对新兴有机污染物的去除：氧化还原反应的影响。 2. Pretreatment methods for aquatic plant biomass as carbon sources for potential use in treating eutrophic water in subsurface-flow constructed wetlands. 21 潜流人工湿地预处理方法对水生植物生物量作为碳源在富营养化水体处理中的潜在应用。 3.Performance of pilot-scale constructed wetlands for secondary treatment of chromium-bearing tannery wastewaters. 14 中试规模人工湿地作为制革厂含铬废水的二级处理的性能研究。 4. Influence of plants on microbial activity in a vertical-downflow wetland system treating waste activated sludge with high organic matter concentrations.21 垂直流湿地废水处理系统的含高有机物浓度的活性污泥中微生物活动对植物的影响。 5.Toxicity of high salinity tannery wastewater and effects on constructed wetland plants. 12 制革厂废水的高盐分对人工湿地植物的毒性和影响。 6. Microbial diversity, tolerance, and biodegradation potential of urban wetlands with different input regimes. 13 不同给料方法的城市湿地中微生物多样性，耐药性和生物降解潜力。 7.Treatment of estrogens and androgens in dairy wastewater by a constructed wetland system.13 人工湿地系统对牛奶厂废水中雌激素和雄激素的处理。 8.Pollutant removal in a multi-stage municipal wastewater treatment system comprised of constructed wetlands and a maturation pond, in a temperate climate. 22 在适度气候条件下由人工湿地和成熟塘组成的多阶段生活废水处理系统中的污染物的去除。 9.Vegetated ditches for treatment of surface water with highly fluctuating water regime. 12 植被沟对高波动的交替进排水机制表面流的处理。 10.Nitrogen removal in an integrated constructed wetland treating domestic wastewater. 10 在一个整合的人工湿地生活污水处理系统中的氮去除。 Word numbers: 10-22 ,7 of 10 within 17 words. Form PubMed. https://www.doczj.com/doc/e213785491.html,parison of interannual removal variation of various constructed wetland types. Hijosa-Valsero M, Sidrach-Cardona R, Bécares E. Abstract
视窗 × loading... 大学英语三第三次在线作业 单选题 (共40道题) 展开 收起 1.（ 2.5分）– Can I help you? --__________. ?A、I want that blue dress. ?B、OK. ?C、That’s OK. ?D 、I can help you. 我的答案：A此题得分：2.5分 2.（2.5分）– What else do you want? -- ___________. ?A、Nothing else. ?B、I’m fine. ?C、What do you want? ?D、It doesn’t matter. 我的答案：A此题得分：2.5分 3.（2.5分）– What kind of room do you want? -- _____.
?A、Room 1. ?B、I have no idea. ?C、I want a single room. ?D、I’m sorry. 我的答案：C此题得分：2.5分 4.（2.5分）– Have you made a reservation? -- ____________. ?A、Yes, I have. ?B、I did. ?C、Yes, I will. ?D、Thank you. 我的答案：A此题得分：2.5分 5.（2.5分）–Excuse me, where can I check out? -- ____________. ?A、At the reception desk. ?B、You’re welcome. ?C、Nice to see you. ?D、When you are ready. 我的答案：A此题得分：2.5分 6.（2.5分）– I really enjoyed the concert. -- _______. ?A、What will you do tomorrow? ?B、I’m glad to hear that.
第一部分:交际用语（共5小题；每小题3分，满分15分） 此部分共有5个未完成的对话，针对每个对话中未完成的部分有4个选项，请从A.B.C.D四个选项中选出正确选项。 1. - Do you think I can borrow your bike for a few hours? 所选答案： B. "I'm sorry, but I really need it this afternoon." 2. - What do you think of this novel? 所选答案： B. It's well-written. 3. - Do you think Tom is ill? 所选答案： A. "No, I don't think so." 4. - How do you do? 所选答案： B. How do you do? 5. - How about going for a drive? 所选答案： D. A good idea. 第二部分:阅读理解（共10小题；每小题3分，满分30分）此部分共有2篇短文，在第一篇短文后有5个正误判断题，从每题后的两个选项中选出正确答案；在第二篇短文后有5个问题。请从每个问题后的A.B.C.D四个选项中选出正确选项。 1. Mr. White lived in a small village. His parents hadn't enough money to send him to school. He had to help them to do something in the fields. But he didn't like to live in the poor place. When he was sixteen, he got to the town and found work in a factory. Three years later he became tall and strong. So he was sent to Africa as a soldier. He stayed there for five years and got some money. Then he came back to England and bought a shop in a small town. No people in the town went to Africa except him. And he hoped they thought he was a famous man and that they could respect him. The children often asked him to tell them some stories ----------专业最好文档，专业为你服务，急你所急，供你所需-------------
专业英语 环境：环境工程： 环境保护：环境意识： 环境问题：环境效应： 环境污染：环境要素： 环境因子：环境化学： 环境生态学：环境质量： 环境自净作用： 水环境：水体： 流域：水质： 水资源：供水： 废水：水处理： 物理性水质指标：水污染物： 生物性水质指标：水质标准： 化学性水质指标： ：： ：： ：： ：值： ：总氮：总磷 ：： ：： ：： ：： 物理处理：过滤： 生物处理：沉淀： 化学处理：气浮： 物理化学处理： 蒸发：稀释： 扩散：吹脱： 好氧处理：生物膜法： 厌氧处理：生物滤池： 活性污泥法：生物接触氧化： ：苯乙烯-丁二烯 （流式厌氧污泥床）：活性污泥：改进型：一级处理： 二级处理：三级处理： 高级氧化处理：生活污水： 生产废水：城市生活污水： 电镀废水： 印染废水：浊度： 硬度：水质净化： 混凝沉淀：活性炭吸附：
隔油池：中和池： 调节池：生物反应池： 加药设备：沉淀池： 初沉池：二沉池： 絮凝剂：混凝剂： 生物降解：生物累积： 飘尘：可吸入颗粒物： 能见度：酸雨： 一次污染物： 二次污染物：氮氧化物： 硫氧化物： 硫化氢：碳氧化物： 硝酸：盐酸： 硫酸：二氧化硫： 除尘工艺： 吸收：吸附： 静电除尘：重力除尘： 臭氧： 光化学烟雾：喷淋（洗涤）： 土壤：热污染：噪声：放射性： ： （计算机辅助设计）： 大气污染控制工程： 水污染控制工程： 固体废物污染控制工程： 污染源： 同化作用：固体废物： 危险废物： 化学污泥： 生物污泥： 工业固废：分选处理：矿业固废：破碎处理： 农业固废：压实处理： 污泥脱水：？ 污泥浓缩： 带式压滤： 离心脱水： 筛分： 堆肥和堆肥化： 沼气和沼气化： 热解与焚烧： 生物转化作用： 热化学转化作用： 固化和稳定化作用：资源化： 减量化： 无害化： 固体废物全过程控制：固体废物污染控制： 固体废物处理： 处置： 物质回收：物质转化：能量回收：能量转化： 1., , , .（2页） 环境工程学是环境工程的分支学科，其研究内容包括①保护环境免受人类活动改造形成的潜在和不利影响②保护人类免受不利环境因素的影响③持续改善环境质量，以造福于人类健康与福祉。 2. a .（2页）
新大学英语（2）第三次网络作业 (三次网络作业的平均成绩占期末考试总评成绩30%，作业一经批改评分，将不能修改；此次作业完成后应交到“在线作业”一栏本次作业界面中；作业必须按最后一页答卷表格格式作答，并且不要以附件形式缴交) 一．阅读： I arrived in the United States on February 6,1966, but I remember my first day here very clearly. My friend was waiting for me when my plane landed at Kennedy Airport at three o’clock in the afternoon. The weather was very cold and it was snowing, but I was too excited to mind. From the airport, my friend and I took a taxi to my hotel. On the way, I saw the skyline（轮廓）of Manhattan （曼哈顿）for the first time and I stared in astonishment at the famous skyscrapers and their man-made beauty. My friend helped me unpack at the hotel and then left me because he had to go back to work. He promised to return the next day. Shortly after my friend had left, I went to a restaurant near the hotel to get something to eat. Because I couldn’t speak a word of English, I couldn’t tell the waiter what I wanted. I was very upset and started to make some gestures(手势), but the waiter didn’t understand me. Finally, I ordered the same thing the man at the next table was eating. After dinner, I started to walk along Broadway until I came to Times Square with its movie theatres, neon lights（霓虹灯）, and huge crowds of people. I did not feel tired, so I continued to talk around the city. I wanted to see everything on my first day. I knew it was impossible, but I wanted to try. When I returned to the hotel, I was exhausted（筋疲力尽）, but I couldn’t sleep because I kept hearing the fire and police sirens（警笛声）during the night. I lay awake and thought about New York. It was a very big and interesting city with many tall buildings and big cars, and full of noise and busy people. I also decided right then that I had to learn to speak English. 1. On the way to his hotel, the writer___C___. a. was silent all the time
大学英语（1）第三次网络作业 (三次网络作业的平均成绩占期末考试成绩30%，作业一经批改评分，将不能修改；此次作业完成后应交到“在线作业”一栏本次作业界面中；作业必须按最后一页答卷表格格式作答，不要以附件形式缴交) 一、交际用语对话练习：（针对每个对话未完成的部分选择最适当的答案） 1. — Please help yourself to the seafood — _______ a. Thanks, but I don’t like the seafood. b. Sorry, I can’t help. c. Well, seafood don’t suit for. d. No, I can’t. 2. — Can you go to the concert with us this evening? — _______ a. No, I already have plans. b. I’d love to, but I’m busy tonight. c. No, I really don’t like being with you. d. I’m ill, so I shouldn’t go out. 3. —Congratulations! You won the first prize in today’s speech contest. — _______. a. Yes, I beat the others. b. No, no I didn’t do it well. c. Thank you. d. It’s a pleasur e. 4. — Must I take a taxi? — No, you _______. You can take my car. a. had better to
K-对策者K-strategistis n维超体积资源空间n-dimensional hyper-volume n维生态位n-dimensional niche Raunkiaer定律Law of Frequency r-对策者r-strategistis 奥陶纪Ordovician period 白垩土草地chalk grassland 斑块patch 斑块性patchiness 斑块性种群patchy population 半荒漠semi-desert 半矩阵或星系图constellation diagrams 伴生种companion species 饱和密度saturation density 饱和期asymptotic phase 保护哲学conservation philosophy 北方针叶林northern conifer forest 被动取样假说passive sampling hypothesis 本能instinct 本能行为instinctive behavior 避敌avoiding predator 边缘效应edge effect
变异性variability 标志重捕法mark recapture methods 标准频度图解frequency diagram 表现型适应phenotypic adaptation 并行的simultaneous 并行同源paralogy 捕食predation 不重叠的non-overlapping 残存斑块remnant patch 残余廊道remnant corridor 操作性条件作用operant conditioning 草原生态系统grassland system 层次性结构hierachical structure 产卵和取食促进剂oviposition and feeding stimulant 产业生态学industry ecology 长日照植物long day plant 超体积生态位hyper—volume niche 成本外摊externalized cost 程序化死亡programmed cell death 尺度效应scaling effect 抽彩式竞争competive lottery 臭氧层破坏ozone layer destruction
化学专业英语期末作业 一、感想 当初选这门课，起初完全是为了跟几个好朋友一起上课。并且抱着一种侥幸心理，想着选修课混着拿个学分就算了。但是当我上完第一节课之后，我就对这门课产生了一种强烈的兴趣。因为老师对课堂内容讲授的很认真、详细，很容易让掌握。充分调动了我们的学习积极性。我觉得作为大三的学生，已经基本学习完了无机化学、有机化学、分析化学、物理化学四大化学，所以很有必要来学习专业英语，此可以将我们之前学习的一些反应类型、化合物、酸、碱、盐以及有机物的命名等用它们对应的英文形式写出来，这种专业英语很容易理解和记忆；再加上老师给出的一些归纳和总结，让我们在每堂课上都能有效的掌握新知识，老师每次边上课，也会提醒我们记笔记，随堂会让我做练习，巩固了我们对化学相关资料的英汉互译能力。这些都让我有了之前课堂学习中没有的那种学习的感觉，也让我不再觉得它是一门选修课，老师的认真负责让我也对自己的学习有了认真负责的态度，所以在每次课后，课前我都会认真看自己的笔记。在大学里，这样认真备课，督促学生认真学习的老师有，可是专业英语的老师更加负责，我学习这门课后，有时候看到课本上相关英语，会不由的记下来，有了这种学习的兴趣。所以说，兴趣是最好的老师，是万老师让我有了学习化学专业英语的兴趣。 二、建议 老师的上课方式很好了。这里就我个人的学习情况，给老师提一个小建议：老师可以在每次上完新课后，在可见后面加一页关于本节课所学内容的课后作业PPT，这样可以督促我们在课后也及时巩固练习所学知识。 三、总结 由于当前大部份化学资料的写作语言是英文，因此，对于化学相关专业，化学 专业英语课程的开设必不可少。专业英语这门课程综合了无机化学、有机化学、分析化学、物理化学、化工基础以及化学文献等方面的主要内容，着重提高学生化学专业方面的英语能力。老师通过课堂教学使我们掌握大多数化学元素的名称；掌握无机化学、有机化学、分析化学、物理化学、化工基础等方面的基础词汇；掌握氧化物、酸、碱、盐、烷、烯、炔、醇、酚、酮、羧酸、胺、醚、酯等物质的I U P A C命名方法以及部分俗名；能基本阅读化学专业的英文文献，初步具有用英语书写化学专业方面的短文的能力，掌握科技英语一般性表达方法、行文习惯和阅读技巧。所以本学期每周二晚上的专业英语课，给了我们对化学知识学习的另