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《大学英语四》在线作业二阶段

《大学英语四》在线作业二阶段
《大学英语四》在线作业二阶段

第二阶段在线作业

单选题 (共40道题)

收起

1.(

2.5分)–Where are you traveling to this summer? -- ______________.

?A、Nice to meet you.

?B、Thanks.

?C、I don’t know yet.

?D、Fine.

我的答案:C 此题得分:2.5分

2.(2.5分)–What do you think of this tour? -- _____________.

?A、It’s terrific!

?B、It doesn’t matter.

?C、Thank you for saying that.

?D、Good idea.

我的答案:A 此题得分:2.5分

3.(2.5分)–Do you like traveling? -- _____________.

?A、Not so much.

?B、Very well.

?C、Thanks.

?D、I’m sorry.

我的答案:A 此题得分:2.5分

4.(2.5分)–Thank you for your help. -- ______________.

?A、Thank you.

?B、Nice to see you.

?C、I’m fine.

?D、You’re welcome.

我的答案:D 此题得分:2.5分

5.(2.5分)–What kind of account do you want to open? -- ____________.?A、Not at all.

?B、That’s OK.

?C、I have an account.

?D、A savings account.

我的答案:D 此题得分:2.5分

6.(2.5分)–How much money do you want to deposit today? -- ___________.?A、Two thousand Yuan.

?B、That’s wonderful.

?C、I like it.

?D、See you around.

我的答案:A 此题得分:2.5分

7.(2.5分)–Would you mind going to the theater with me? -- _________________.

?A、Thank you.

?B、Good idea.

?C、Not at all.

?D、That’s true.

我的答案:C 此题得分:2.5分

8.(2.5分)–Why don’t we go to the theater this evening? -- ______________.?A、I think so.

?B、Good idea!

?C、I agree with you.

?D、It’s fine.

我的答案:B 此题得分:2.5分

9.(2.5分)It is from my grandparents_____ I learned a lot.

?A、who

?B、whom

?C、that

?D、which

我的答案:C 此题得分:2.5分

10.(2.5分)–Do you like Beijing opera? -- ____________.

?A、Yes, I do

?B、Thank you.

?C、Excellent!

?D、That would be wonderful!

我的答案:A 此题得分:2.5分

11.(2.5分)I' ve enjoyed ____ to talk with you.

?A、to be able

?B、being able

?C、to been able

?D、of being able

我的答案:B 此题得分:2.5分

12.(2.5分)They are considering ____ before the prices go up.

?A、of buying the house

?B、with buying the house

?C、buying the house

?D、to buy the house

我的答案:C 此题得分:2.5分

13.(2.5分)He thought that ____.

?A、the effort doing the job was not worth

?B、the effort was not worth in doing the job

?C、it was not worth the effort doing the job

?D、it was not worth the effort by doing the job

我的答案:C 此题得分:2.5分

14.(2.5分)Your shirt needs ____. You' d better have it done today.

?A、iron

?B、to iron

?C、ironing

?D、being ironed

我的答案:C 此题得分:2.5分

15.(2.5分)The thief took away the girl’s wallet without____.

?A、being seen

?B、seeing

?C、him seeing

?D、seeing him

我的答案:A 此题得分:2.5分

16.(2.5分)Tony, would you go and see if Sam has any difficulty ____ his tape recorder?

?A、to fix

?B、fixing

?C、for fixing

?D、fix

我的答案:B 此题得分:2.5分

17.(2.5分)It is difficult to get used ____ in a tent after having a soft, comfortable bed to lie on.?A、sleep

?B、to sleeping

?C、slept

?D、to sleep

我的答案:B 此题得分:2.5分

18.(2.5分)Do you feel like ____ out or would you rather ____ dinner at home?

?A、going...to have

?B、to go...to have

?C、to go...having

?D、going...have

我的答案:D 此题得分:2.5分

19.(2.5分)The experiment __________,the students went on to take notes in the experiment report.?A、do

?B、does

?C、doing

?D、done

我的答案:D 此题得分:2.5分

20.(2.5分)The meeting____ over,we all left the room.

?A、is

?B、to be

?C、being

我的答案:C 此题得分:2.5分

21.(2.5分)With the price of oil _____________,our economy would be improved.

?A、goes up

?B、went up

?C、going up

?D、gone up

我的答案:C 此题得分:2.5分

22.(2.5分)There ________no danger, the police went back to their police office.

?A、be

?B、is

?C、are

?D、being

我的答案:D 此题得分:2.5分

23.(2.5分)The fish____ bad,the children left much of it____________ .

?A、tasted,untouched

?B、tasting,untouched

?C、tasting,untouching

?D、tasted,untouching

我的答案:B 此题得分:2.5分

24.(2.5分)There is a river in the valley,fresh flowers _________________.

?A、is on the banks

?B、were on the banks

?C、being on the banks

?D、on the banks

我的答案:D 此题得分:2.5分

25.(2.5分)I used to sleep with the window _____.

?A、opened

?B、open

?C、opening

?D、to open

我的答案:B 此题得分:2.5分

26.(2.5分)Walter offered us a lift when he was leaving the office,but our work ______,we didn’t accept th

e offer.

?A、not being finished

?B、not having finished

?C、had not been finished

?D、was not finished

我的答案:A 此题得分:2.5分

27.(2.5分)______Sunday,the library doesn' t open.

?B、There being

?C、It being

?D、Having been

我的答案:C 此题得分:2.5分

28.(2.5分)__________ ,he can' t go out for a walk as usual.

?A、With so much work to do

?B、With so much work doing

?C、With so much work done

?D、Without so much work to do

我的答案:A 此题得分:2.5分

29.(2.5分)____,the bus started at once.

?A、The signal was given

?B、The signal giving

?C、The signal given

?D、When the signal given

我的答案:C 此题得分:2.5分

30.(2.5分)_____ in Beijing for quite a few years, Mr. Park had little difficulty understanding Chinese.?A、having lived

?B、Lived

?C、Living

?D、To live

我的答案:A 此题得分:2.5分

31.(2.5分)The library _____ next year will be more advanced than the old one.

?A、built

?B、to be built

?C、being built

?D、to build

我的答案:B 此题得分:2.5分

32.(2.5分)When________ that it was getting late, I put off the light and went to bed.

?A、find

?B、finding

?C、found

?D、to find

我的答案:B 此题得分:2.5分

33.(2.5分)______in this way, the situation doesn' t seem so disappointing.

?A、To look

?B、Looking at

?C、Looked at

?D、To be looked at

我的答案:C 此题得分:2.5分

34.(2.5分)He asked the waiter ________ the bill.

?A、on

?B、of

?C、for

?D、after

我的答案:C 此题得分:2.5分

35.(2.5分)The atmosphere _________certain gases mixed together in definite proportions.?A、composes of

?B、is made up

?C、consists of

?D、makes up of

我的答案:C 此题得分:2.5分

36.(2.5分)She _______ 100 pages of the book today.

?A、has already read

?B、already reads

?C、already read

?D、was already read

我的答案:A 此题得分:2.5分

37.(2.5分)We all thought ____pity that you were unable to attend our meeting.?A、that

?B、which

?C、this

?D、it

我的答案:D 此题得分:2.5分

38.(2.5分)I had my meals ____when I was ill in bed with a bad cold.

?A、to bring

?B、bring

?C、brought

?D、bringing

我的答案:C 此题得分:2.5分

39.(2.5分)He _______ finding a taxi for me, even though I told him I lived nearby.?A、insisted on

?B、insisted at

?C、insisted that

?D、insisted in

我的答案:A 此题得分:2.5分

40.(2.5分)As the bus came round the corner, it ran ______ a big tree by the roadside.?A、into

?B、on

?C、over

?D、up

我的答案:A 此题得分:2.5分

一、阅读理解(共1道小题,共25.0分) 1. People are so busy these days that many have no time to cook. This is a problem because many families love home cooking! A family meal brings everyone together. In some families, meals are often the only time everyone sees each other at the same time. Another reason people enjoy home cooking is that it is often a way of showing love. A parent who makes some cookies is not just satisfying a child's sweet tooth. She or he is sending a message. The message says, "I care about you enough to spend an hour making cookies that you will eat up in 15 minutes if I let you." There is also something about the smell of home cooking. The smell of home cooking pleases people of all ages. It makes most of us feel good and loved --- even if we are the ones doing the cooking! Next time you smell a cake being cooked, stop for a moment and pay attention to your mood(心情). 1. 1. Why do few people cook now? A. They have no time. B. They can buy food. C. Many people don?t like cooking. D. They don?t like family meals. 2. A parent spends an hour making cookies____. A. just to satisfy her or his child?s sweet tooth B. only to send a message C. to let a child eat up in 15 minutes D. often to show her or his love 3. The writer thinks the smell of home cooking _____. A. makes us happy B. makes us be interested in cooking C. makes us pay attention to our mood D. makes us love others 4. What?s the main idea of this passage? A. Family meals are important. B. How to make cookies. C. People are too busy to cook D. Homemade cookies taste better. 5. Which of the following statements is NOT true according to the passage? A. There are quite a few reasons that people love home cooking. B. It becomes a problem that most families love home cooking. C. The smell of home cooking makes most of us feel good. D. A family meal can bring the family members together. 试题分值:25.0

一、完形填空(共1道小题,共50.0分) 1.Once, three fishes lived in a pond. One evening, some ___1___ passed by the pond and saw the fishes. “This pond is full of fish”, they told each other __2___. “We have never fished here before. We must come back tomorrow morning with our ___3___ and catch these fish!” So saying, the fishermen left. When the eldest of the three fishes ___4___ this, he was troubled. He called the other fishes together and said, “Did you hear ___5___ the fishermen said? We must leave this pond at once. The fishermen will return tomorrow and kill us all!” The second of the three fishes agreed. “You are right”, he said. “We must leave the pond.” But the ____6___ fish laughed. “You are worrying without reason”, he said. “We have lived in this pond all our lives, and no fisherman has ever come here. Why should these men return? I am not going ___7____ - my luck will keep me safe.” The eldest of the fishes left the pond that ___8____ evening with his entire family. The second fish saw the fishermen ____9___ in the distance early next morning and left the pond at once with all his family. The third fish refused to leave even then. The fishermen ____10___and caught all the fish left in the pond. The third fish's luck did not help him - he too was caught and killed. (232字) a. A.fishersman B.fisherman C.fishermans D.fishermen 学生答案: D; 标准答 案: D b. A.excitedly B.excited C.excite D.exciting

第二阶段在线作业 单选题(共40道题) 收起 1.( 2.5分)–Where are you traveling to this summer? -- ______________. ?A、Nice to meet you. ?B、Thanks. ?C、I don’t know yet. ?D、Fine. 我的答案:C 此题得分:2.5分 2.(2.5分)–What do you think of this tour? -- _____________. ?A、It’s terrific! ?B、It doesn’t matter. ?C、Thank you for saying that. ?D、Good idea. 我的答案:A 此题得分:2.5分 3.(2.5分)–Do you like traveling? -- _____________. ?A、Not so much. ?B、Very well. ?C、Thanks. ?D、I’m sorry. 我的答案:A 此题得分:2.5分 4.(2.5分)–Thank you for your help. -- ______________. ?A、Thank you. ?B、Nice to see you.

?C、I’m fine. ?D、You’re welcome. 我的答案:D 此题得分:2.5分 5.(2.5分)–What kind of account do you want to open? -- ____________. ?A、Not at all. ?B、That’s OK. ?C、I have an account. ?D、A savings account. 我的答案:D 此题得分:2.5分 6.(2.5分)–How much money do you want to deposit today? -- ___________. ?A、Two thousand Yuan. ?B、That’s wonderful. ?C、I like it. ?D、See you around. 我的答案:A 此题得分:2.5分 7.(2.5分)–Would you mind going to the theater with me? -- _________________. ?A、Thank you. ?B、Good idea. ?C、Not at all. ?D、That’s true. 我的答案:C 此题得分:2.5分 8.(2.5分)–Why don’t we go to the theater this evening? -- ______________. ?A、I think so. ?B、Good idea!

《局域网组网工程》第2次作业答案 第8章至第13章 注:作业中的“操作题”,同学们可以根据自己的条件选择完成。 第8章组建无线局域网 一、填空题 (1) 无线网卡主要有三种类型,分别是___________,____________,____________。[笔记 本电脑专用的PCMCIA无线网卡、台式机专用的PCI无线网卡、笔记本电脑与台式电脑都可以使用的USB无线网卡] (2) 当前的PCI无线网卡大多由___________和____________两部分组成。[无线PCMCIA网 卡、PCI接口网卡] (3) IEEE 802.11的运作模式主要有___________和____________两种。[点对点模式、基站模 式] 二、选择题 (1) 目前使用最多的无线局域网标准是_____________。[C] A. IEEE 802.3 B. IEEE 802.11 C. IEEE 802.11b D. 以上都不是 (2) 组建无线局域网最基本的设备是_____________。[A] A. 无线网卡 B. 无线AP C. 无线网桥 D. 无线Hub (3) 设置无线网卡或无线AP的参数是_______、_______和_______,SSID表示_______。[A、 C、D、B] A. 数据安全方式 B. 网络名称 C. 通信频道 D. 网络类型 (4) 不是无线局域网拓扑结构的是_____________。[D] A. 网桥连接型结构 B. Hub接入型结构 C. 无中心结构 D. 总线型结构 三、问答题 (1) 简述使用无线网卡组网与使用无线AP组网的两种方法的联系与差别。 (2) 简述组建无中心结构的无线网的方法。 四、操作题(根据自己的条件选做) (1) 使用三台装有无线网卡的台式机或笔记本电脑组建一个独立的无线网络。 (2) 使用一台无线AP,一方面组成一个无线网络,另一方面实现与一个有线网络的连接。 无线网络至少包括两台计算机,有线网络也至少包括两台计算机,整个网络是基站模式。 第9章局域网接入Internet 一、填空题 (1) Internet上的各计算机之间使用______________协议进行通信。[TCP/IP] (2) 列举局域网接入Internet的三种方式____________、____________、____________。 [局域网拨号上网、ADSL宽带入网、局域网专线入网]

1. People have been talking about health for a long time because people know the importance of it. People's understanding of health also becomes deeper with the progress in scientific research. Recently the term "health" has come to have a wider meaning than it used to. It no longer means just the absence of illness. Today, health means the well-being of your body, your mind and your relationship with other people. This new concept of health is closely related to another term----quality of life. Quality of life is the degree of overall satisfaction that a person gets from life. Why has the emphasis of health shifted from the absence of disease to a broader focus on the quality of a person's life?One reason for this has to do with the length and conditions of life that people can now expect. Medical advances have made it possible for people today to live longer, healthier lives. Imagine for a moment that you were born in the year 1900. You could have expected on average to live until about the age of 47. In contrast, if you were born in the year 1999, you could expect to live to the age of 75. 2. 1. ______leads to people's deeper understanding of health. 2. https://www.doczj.com/doc/ef17956656.html,mon knowledge 2.Progress in scientific research 3.Better conditions of living 4.Quality of life 3. According to the passage, to people of today, health means______. 4. 1.absence of illness 2. a long life 3.good conditions of living 4.overall satisfaction with life

《大学英语3》第2阶段在线作业试卷要求: 答题要求: 每题只有一个正确的选项。 1(5.0分) _______ these honors he received a sum of money. ?A) Except ? ?B) But ? ?C) Besides ? ?D) Outside ?

解析: 无 2(5.0分) It’s time we _______ the lecture because everybody has arrive d. ?A) will start ? ?B) shall start ? ?C) start ? ?D) started ? 3(5.0分) His salary as a driver is much higher than ______.

a porter ? ?B) is a porter ? ?C) that of a porter ? ?D) as a porter ? 4(5.0分) _______ her and then try to copy what she does. ?A) Mind ? ?B) See ? ?C) Stare at

?D) Watch ? 5(5.0分) The girl is ______ of a film star. ?A) somebody ? ?B) something ? ?C) anybody ? ?D) anyone ?

6(5.0分) The atmosphere ______ certain gases mixed together in definit e proportions. ?A) composes of ? ?B) is made up ? ?C) consists of ? ?D) makes up of ? 7(5.0分)

第二阶段在线作业 单选题 (共20道题) 展开 收起 1.( 2.5分)下列表述正确的一句是()。 ? A、决定可以用来变更下级机关不适当的决定。 ? B、决定不可以用来变更下级机关不适当的决定。 ? C、决定和命令都可以用来变更下级机关不适当的决定。 ? D、决定和命令都不可以用来变更下级机关的不适当的决定。我的答案:A 此题得分:2.5分 2.(2.5分)下列表述正确的一句是()。 ? A、决定的缘由要充分、准确、合理。 ? B、决定的缘由要明确、简洁。 ? C、决定的缘由要及时、有预见性。 ? D、决定的缘由要有政策性。 我的答案:A 此题得分:2.5分 3.(2.5分)下列表述正确的一句是()。 ? A、表彰决定要写明表彰决定、表彰人员、表彰方法。 ? B、表彰决定要写明表彰决定、表彰项目、表彰方法。

? C、表彰决定要写明表彰决定、表彰项目、表彰金额。 ? D、表彰决定要写明表彰决定、表彰项目、表彰时间。 我的答案:B 此题得分:2.5分 4.(2.5分)下列表述正确的一句是()。 ? A、通知适用于传达需要有关单位周知或执行的事项。 ? B、通知只适用于传达需要有关单位周知的事项,但不适用于传达需要有关单位执行的事项. ? C、通知只适用于传达需要有关单位执行的事项,但不适用于传达需要有关单位周知的事项。 ? D、通知既不适用于传达需要有关单位周知的事项,也不适用于传达需要有关单位执行的事项。 我的答案:A 此题得分:2.5分 5.(2.5分)下列表述正确的一句是()。 ? A、如果通报可以用来表彰先进,那么所表彰的必须是先进集体。 ? B、如果通报可以用来表彰先进,那么所表彰的必须是先进个人。 ? C、通报既可以用来表彰先进集体,又可以用来表彰先进个人。 ? D、通报既不可以用来表彰先进集体,也不可以用来表彰先进个人。 我的答案:C 此题得分:2.5分 6.(2.5分)下列表述正确的一句是()。 ? A、议案就是提案,在一般场合叫提案,在正式场合叫议案。 ? B、议案与提案都是国家正式公文,性质和作用完全一样。

第二次作业答案标准化管理部编码-[99968T-6889628-J68568-1689N]

1.指令中为什么使用隐地址方式。 答:简化地址结构。 2.简述堆栈操作的特点,并举例说明。 答:先进后出(或后进先出),例子略。 3. 指令字长16位,可含有3、2、1或0个地址,每个地址占4位。请给出一个操作码扩展方案。 和CISC的中文名称是什么。 RISC(Reduced Instruction Set Computer):精简指令集计算机 CISC(Complex Instruction Set Computer):复杂指令集计算机 5.简述80%和20%规律。 答:80%的指令是简单指令,占运行时间的20%;20%的指令是复杂指令,占运行时间的80%。 6.简化地址结构的基本方法是什么 答:采用隐地址 7.如何用通用I/O指令实现对各种具体设备的控制 答: 1)I/O指令中留有扩展余地 2)I/O接口中设置控制/状态寄存器 8.什么是I/O端口 答:I/O接口中的寄存器 9.对I/O设备的编址方法有哪几种请简要解释。 1)单独编址:I/O地址空间不占主存空间,可与主存空间重叠。 具体分为编址到寄存器和编址到设备两种。 编址到设备:每个设备有各自的设备编码;I/O指令中给出设备码,并指明访问该设备的哪个寄存器。 编址到寄存器:为每个寄存器(I/O端口)分配独立的端口地址;I/O指令中给出端口地址。 2)统一编址:为每个寄存器(I/O端口)分配总线地址;访问外设时,指令中给出总线地址。I/O端口占据部分主存空间。 10.用堆栈存放返回地址,则转子指令和返回指令都要使用的寄存器是什么 答:堆栈指针SP 11.给出先变址后间址、先间址后变址和相对寻址三种寻址方式对有效地址的计算方法。 先变址后间址:EA =((R)+D) 先间址后变址:EA =(R)+(D) 相对寻址:EA =(PC)±D 12.各种寻址方式的操作数放于何处,如何形成操作数的有效地址。 答:除寄存器直接寻址方式操作数放在寄存器中之外,其它寻址方式操作数均在主存中。 立即寻址:指令中提供操作数 直接寻址:指令直接给出操作数地址 寄存器寻址:指令中给出寄存器号就是有效地址 间接寻址:指令中给出间址单元地址码(操作数地址的地址),按照该地址访问主存中的某间址单元,从中取出操作数的地址

A . anyone else B . anything C . some of the things D . anything else A . more larger, all B . much larger, that C . very larger, both D . larger, those

A . flooded B . were flooded C . was flooded D . flood √4. A . being B . C . having D . having A . happened to see B . was happened to see C . happened to be seen D . was happened to be seen

A . rather B . enough C . quite a D . fairly A . the much best B . much the most best C . the very best D . very the best A . will put off

B . will be put off C . will be put D . has put off A . When B . What time C . How often D . How long A . take good care of B . has taken good care of C . took good care of D . are taken good care of

一、句子改错(共5道小题,共25.0分) 1. This is such a beautiful day that everyone around us feel like going out for a walk. A B C D A. A B. B C. C D. D 2. Neither John and his father was able to wake up early enough to catch the morning train. A B C D A. A B. B C. C D. D

3. He finds it easier to do the cooking himself than teaching his wife to cook. A B C D A. A B. B C. C D. D 4. Despite his old age, he is still very healthful and often works in the field. A B C D A. A B. B C. C D. D

5. The information which she was injured in the accident was given by Liz. A B C D A. A B. B C. C D. D 二、阅读理解(共1道小题,共50.0分)

1. Today, as in every other day of the year, more than 3,000 U.S. adolescents will smoke their first cigarette on their way to becoming regular smokers as adults. During their lifetime, it can be expected that of these 3,000 about 23 will be murdered, 30 will die in traffic accidents, and nearly 750 will be killed by a smoking-related disease. The number of deaths attributed to cigarette smoking outweighs all other factors, whether voluntary or involuntary, as a cause of death. Since the late 1970s, when daily smoking among high school seniors reached 30 percent, smoking rates among youth have declined. While the decline is impressive, several important issues must be raised. First, in the past several years, smoking rates among youth have declined very little. Second, in the late 1970s, smoking among male high school seniors exceeded that among female by nearly 10 percent. The statistic is reversing. Third, several recent studies have indicate high school dropouts have excessively high smoking rates, as much as 75 percent . Finally, though significant declines in adolescent smoking have occurred in the past decade, no definite reasons for the decline exist. Within this context, the National Cancer Institute (NCI) began its current effort to determine the most effective measures to reduce smoking levels among youth. 1. According to the author, the deaths among youth are mainly caused by _____. A. traffic accidents B. smoking-related diseases C. murder D. all of these 2. Every day there are over _____young people who will become regular smoker. A. 75 B. 23 C. 30 D. 3,000 3. By "dropout" (in paragraph 3) the author means______. A. students who failed the examination

第二次作业答案 第二次作业答案 2019年4月9日 同学们: 你们好!完成此次作业首先需要大家对教材第3至第4章内容进行学习,之后才能作 以下作业。 一、单选题 1、一般地,银行贷款利率和存款利率的提高,分别会使股票价格发生如下哪种变化?() A 、上涨、下跌 B、上涨、上涨 C、下跌、下跌 D、下跌、上涨 2、通常,当政府采 取积极的财政和货币政策时,股市行情会()。 A 、看涨 B、走低 C、不受影响 D、无 法确定 3、判断产业所处生命周期阶段的最常用统计方法是()。 A 、相关分析 B、回归 分析 C、判别分析法 D、主成分分析法 4、某支股票年初每股市场价值是30元,年底的市场价值是35元,年终分红5元, 则该股票的收益率是()。 A 、10% B、14.3% C、16.67% D、33.3% 5、某人投资了三种股票,这三种股票的方差—协方差矩阵如下表,矩阵第(i ,j )位置上的元素为股票I 与j 的协方差,已知此人投资这三种股票的比例分别为0.1,0.4,0.5,则该股票投资组合的风险是()。方差—协方差 A B C A 100 120 130 B 120 144 156 C 130 156 169 A 、9.2 B、8.7 C、12.3 D、10.4 6、对于几种金融工具的风险性比较,正确的是()。 A 、股票>债券>基金 B、债券>基金>股票 C 、基金>债券>股票 D、股票>基金>债券 7、纽约外汇市场的美元对英镑汇率的标价方法是()。 A 、直接标价法 B、间接 标价法 C、买入价 D、卖出价

8、一美国出口商向德国出售产品,以德国马克计价,收到货款时,他需要将100万 德国马克兑换成美元,银行的标价是USD/DEM:1.9300-1.9310,他将得到()万美元. A 、51.5 B、51.8 C、52.2 D、52.6 9、2000年1月18日伦敦外汇市场上美元对英镑汇率是:1英镑=1.6360—1.6370美元,某客户买入50000英镑,需支付()美元。 A. 、30562.35 B、81800 C、81850 D、30543.68 10、马歇尔—勒纳条件表明的是,如果一国处于贸易逆差中,会引起本币贬值,本币 贬值会改善贸易逆差,但需要具备的条件是()。 A 、本国不存在通货膨胀 B、没有政 府干预 C 、利率水平不变 D、进出口需求弹性之和必须大于1 二、多选题 1、下列影响股票市场的因素中属于基本因素的有()。 A .宏观因素 B.产业因素 C.区域因素 D.公司因素 E.股票交易总量 2、产业发展的趋势分析是产业分析的重点和难点,在进行此项分析时着重要把握()。 A .产业结构演进和趋势对产业发展的趋势的影响 B .产业生命周期的演变对 于产业发展的趋势影响 C .国家产业改革对产业发展趋势的导向作用 D .相关产业发展 的影响 E .其他国家的产业发展趋势的影响 3、技术分析有它赖以生存的理论基础——三大假设,它们分别是() A .市场行 为包括一切信息 B .市场是完全竞争的 C .所有投资者都追逐自身利益的最大化 D .价格沿着趋势波动,并保持趋势 E .历史会重复 4、下面会导致债券价格上涨的有()。 A .存款利率降低 B .债券收益率下降 C .债券收益率上涨 D .股票二级市场股指上扬 E .债券的税收优惠措施 5、某证券投资基金的基金规模是30亿份基金单位。若某时点,该基金有现金10亿元,其持有的股票A (2000万股)、B (1500万股),C (1000万股)的市价分别为10元、20元、30元。同时,该基金持有的5亿元面值的某种国债的市值为6亿元。另外, 该基金对其基金管理人有200万元应付未付款,对其基金托管人有100万元应付未付款。 则() A .基金的总资产为240000万元 B .基金的总负债为300万元 C .基金总净值位237000万元 D .基金单位净值为0.79元 E .基金单位净值为 0.8元

16秋北邮大学英语3阶段作业

一、单项选择题(共9道小题,共90.0分) 1.下面关于 Java 的理解错误的是()。 A.Java 是一个面向对象、平台独立、多线 程、动态的编程环境 B.Java 是一个完整的计算平台,包括完整 的程序开发环境和运行环境 C.Java 是一个通用的编程环境,使用它可 以开发完成各种计算任务的通用程序 D.Java 是一个 Web 程序开发和运行环 境,使用它只能开发 Web 应用程序 知识 点: 阶段作业一 学生答案: [D;] 标准 答案: D 得分: [10] 试题 分值: 10.0 2.(错误) 下面不是包的用途的是( A ) A.规定一组类的对外界面 B.防止命名冲突 C.访问控制

D.方便类的查找和使用 知识 点: 阶段作业一 学生答案: [D;] 标准 答案: A 得分: [0] 试题 分值: 10.0 3.在Java中,用Package语句说明一个包时,该包的层次结构必须是() A.与文件的结构相同 B.与文件目录的层次相同 C.与文件类型相同 D.与文件大小相同 知识 点: 阶段作业一 学生答案: [B;] 标准 答案: B 得分: [10] 试题 分值: 10.0 4.关于Eclipse透视图说法错误的是() A.每个透视图都定义了工作台中各个视图 的初始设置和布局 B.一个工作台窗口包含多个独立的透视 图,但同一时刻只有一个透视图是对用 户可见的 C.每个透视图都有自己的视图和编辑器,

用户可以在各个透视图间切换 D.透视图的布局是可以改变的,但改变多 次后无法再恢复到初始设置 知识 点: 阶段作业一 学生答案: [D;] 标准 答案: D 得分: [10] 试题 分值: 10.0 5.(错误) 关于Eclipse工作空间说法错误的是( C ) A.它是用户计算机磁盘上划出的一块区 域,用来存放用户的工作资料 B.它以项目为单位组织文件和目录 C.它将各种资源组织成树形结构,文件夹 位于树的根部,项目位于树枝位置 D.用户对工作空间的每次操作都能在 Eclipse集成环境中得到同步 知识 点: 阶段作业一 学生答案: [B;] 标准 答案: C 得分: [0] 试题 分值: 10.0

第二次作业参考答案 1、中等长度输电线路的集中参数等值电路有那两种形式?电力系统分析计算中采用哪一种?为什么? 答:中等长度输电线路的集中参数等值电路有τ型等值电路和π型等值电路两种,电力系统分析计算中采用π型等值电路。因为电力系统分析计算通常采用节点电压法,为减少独立节点的数目,所以采用π型等值电路。 2、为什么要采用分裂导线?分裂导线对电晕临界电压有何影响? 答:采用分裂导线是为了减小线路的电抗,但分裂导线将使电晕临界电压降低,需要在线路设计中予以注意。 3、输电线路进行全换位的目的是什么? 答:输电线路进行全换位的目的是使输电线路各相的参数(电抗、电纳)相等。 4、变压器的τ形等值电路和T 形等值电路是否等效?为什么? 答:变压器的τ形等值电路和T 形等值电路不等效,τ形等值电路是将T 形等值电路中的励磁值路移到一端并用相应导纳表示所得到的等值电路,是T 形等值电路的近似电路。 5、已知110KV 架空输电线路长度为80km,三相导线平行布置,线间距离为4m ,导线型号为LGJ -150,计算其参数并画出其等值电路。(LGJ-150导线计算外径为17mm ) 解:由于线路为长度小于100km 的短线路,线路的电纳和电导可以忽略不计,因而只需计算其电抗和电阻。 )(5426.1m D m ≈?==500(cm ),导线计算半径)(5.82 17 cm r == ,标称截面为)(1502mm S =,取导线的电阻率为km mm /.5.312Ω=ρ。 )/(21.0150 5.311km S r Ω===ρ )/(416.00157.05 .8500 lg 1445.01km x Ω=+= 输电线路的总电阻和总电抗分别为: )(8.168021.01Ω=?==l r R 、)(28.3380416.01Ω=?==l x X 输电线路的单相等值电路如图

大千世界中的物理知识第一阶段在线作业 1、关于地磁场,下列说法正确的是()。 A)地球是一个巨大的磁体,地磁N极在地理北极附近,S极在地理南极附近 B)地磁场在地表附近某处,有两个分量,水平分量指向地理北极附近,竖直分量一定竖直向下 C)若能将指南针放在地心,则它的N极指向地球北极 D)若能将指南针放在地心,则它的N极指向地球南极参考答案:D 2(5.0分)下列说法不正确的是: A)浸润液体在细管里能上升B)不浸润液体在细管里能下降 C)在建筑房屋时,在砌砖的地基上要铺一层油毡或涂过沥青的厚纸,这是为了增加毛细现象使地下水容易上升 D)农田里如果要保存地下的水分,就要把地面的土壤锄松,可以减少毛细现象的发生参考答案:C 3(5.0分)雨天路滑,车辆需减速行驶,是为了()。 A)减小惯性,刹车时车能很快停止B)避免惯性,遇事时车能立即停止 C)增大惯性,刹车时车能停得更快D)防止因惯性来不及停车而造成交通事故参考答案:D 4(5.0分)天宫二号空间实验于2016年第三季度发射,空间实验室内适宜宇航员工作生活的气压约为()。A)100Pa B)1000Pa C)10000Pa D)100000Pa 参考答案:D 5(5.0分)发现有人触电,下列抢救措施正确的是()。 A)拨打110或120同时去喊电工B)迅速用剪刀或小刀切断电源 C)迅速用手把人拉开使其脱离电源D)立即用绝缘物使触电者脱离电源参考答案:D 6(5.0分)雷暴天气时,以下家中哪种物品最可能易遭受雷击损害? A)电磁炉B)电冰箱C)微波炉D)电话机参考答案:D 7(5.0分)《新民晚报》曾报道一则消息,“上海雨点鸽从内蒙古放飞后,历经20余天,返回上海区鸽巢”,信鸽的这种惊人的远距离辨认方向的本领,实在令人称奇,人们对信鸽有高超的认路本领的原因提出了很多猜想。那么信鸽究竟靠什么辨别方向呢?科学家们曾做过这样一个实验:把几百只训练有素的信鸽分成两组,在一组信鸽的翅膀下各缚一块小磁铁,而在另一组信鸽的翅膀下各缚一块大小相同的铜块,然后把它们带到离鸽舍一定距离的地方放飞,结果绝大部分缚铜块的信鸽飞回鸽舍,而缚磁铁的信鸽全部飞散了。科学家的实验支持了哪种猜想? A)信鸽对地形地貌有极强的记忆力B)信鸽能发射并接收某种超声波 C)信鸽能发射并接收某种次声波D)信鸽体内有某种磁性物质,它能借助地磁场辨别方向参考答案:D 8(5.0分)下面有关表面张力的说法中不正确的是()。 A)表面张力的作用使液体表面伸张B)表面张力的作用使液体表面收缩 C)有些小昆虫能在水面上行走,这是由于表面张力的缘故 D)用滴管滴液滴,滴的液滴总是球形,这是由于表面张力的缘故参考答案:A 9(5.0分)下列关于偏振光的说法中正确的是()。 A)自然光就是偏振光B)沿着一个特定方向传播的光叫偏振光 C)沿着一个特定方向振动的光叫偏振光D)单色光就是偏振光参考答案:C 10(5.0分)液体表面具有收缩趋势的原因是()。 A)液体可以流动B)液体表面层分子间距离小于液体内部分子间距离 C)与液面接触的容器壁的分子对液体表面分子有吸引力 D)液体表面分子间距离大于液体内部分子间距离参考答案:D 11(5.0分)避雷针一般不采用()制作。 A)镀锌圆钢B)不锈钢管C)镀锌钢管D)铜棒参考答案:D 12(5.0分)下列说法中正确的是()。

《现代汉语》第二次作业答案 你的得分: 98.5 完成日期:2018年01月29日 16点10分 说明:每道小题选项旁的标识是标准答案。 一、单项选择题。本大题共20个小题,每小题 2.0 分,共40.0分。在每小题给出的选项中,只有一项是符合题目要求的。 1.对普通话而言,汉语方言是一种() A.地域分支 B.并立的独立语言 C.民族共同语的高级形式 D.对立的独立语言 2.就与普通话的差别来说,七大方言中()与普通话距离最大。 A.吴方言 B.闽、粤方言 C.湘、赣方言 D.客家方言 3.发音时,气流从舌两边发出来的音叫() A.舌音 B.舌面音 C.边音 D.卷舌音 4.舌尖后音包括() A.j、q、x B.zh、ch、sh、r C.zh、ch、sh、r、l D.d、t、n、l 5.舌位后、半高、唇不圆的元音韵母是() A. e B.o C. a D.i 6.i和e的区别在于() A.舌位的高低不同 B.舌位的前后不同 C.嘴唇的圆与不圆 D.舌位的前后不同和嘴唇的圆与不圆 7.根据普通话声韵配合规律,与f相拼的韵母是() A.开口呼、合口呼 B.齐齿呼、撮口呼 C.开口呼、齐齿呼 D.合口呼、撮口呼 8.轻声的作用是()

A.使语音有抑扬顿挫的变化,可以增加语音的音乐性 B.可以使生理上得到调节,避免劳累 C.可以区别一些词的词性和意义 D.感情色彩有强弱 9.从汉字的造字方法来看,"禾、衣、果"三个字都是() A.象形字 B.指事字 C.会意字 D.形声字 10.从下列四组字中选出造字法与另三组不同的一组:() A.萌旺佐 B.芳响何 C.草睛伙 D.莫明信 11.我国第一部以偏旁部首整理出来的字书是() A.《说文解字》 B.《集韵》 C.《康熙字典》 D.《中华大字典》 12.“凹”和“凸”两个字的笔画数都是()。 A.5笔 B.6笔 C.7笔 D.8笔 13.下列各组词中全部是联绵词的是() A.仓猝、唐突、阑干、苗条、蝙蝠 B.坎坷、蟋蟀、枇杷、卢布、拮据 C.详细、伶俐、逍遥、葫芦、蒙胧 D.游弋、叮咛、摩托、喽罗、吩咐 14."喂养"和"饲养"的区别是() A.动作的行为特点不同 B.动作行为的施事者不同 C.语义轻重不同 D.支配对象不同 15."反法西斯主义者"中的语素有() A.两个 B.三个 C.四个 D.五个 16."惆怅"一词是() A.叠韵词 B.双声词 C.音译词 D.非双声叠韵词

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