《C++基础知识》习题
《C++基础知识》习题
学号姓名
一、选择题
1、在C++语言里，自定义的标识符
A．能使用关键字且不区分大小写B．不能使用关键字且不区分大小写B．能使用关键字且区分大小写D．不能使用关键字且区分大小写
2、在C++语言中，070是
A．八进制数B．十进制数C．十六进制数D．非法数
3、设int a= 10,b= 11,c= 12;表达式（a+b）< c && b = = c的值是
A．2 B． 0 C．-2 D．1
4、下列符号中，不是分隔符
A．; B. // C. ( ) D. { }
5、以下__________不能用作标识符
A. a6.3
B. _1234
C. GetName
D. b_tree
6、表达式__________是满足：当c的值为1、3、5三个数时值为“真”，否则值
为“假”的表达式
A. (c=1)||(c=3)||(c=5)
B. (c!=1)&&(c!=3)&&(c!=5)
C. (c==1)&&(c==3)&&(c==5)
D. (c==1)||(c==3)||(c==5)
7、设有说明“int I=10;float x;”,执行“x=5/I”后,x的值为
A. 0.5
B. 0
C. 1.0
D. 以上皆否
8、int a=11,b=011;cout< ++运算符的位置） A.11 10 B.12 11 C.11 12 D.12 10 9、执行以下程序: char c=0;cout< A.’\0’ B.语法错,不能执行 C.0 D.一个空行 10、设有说明：int x=4,y=6; float f;执行表达式f=(x=4.5)+(y=7.5)后，测x,y,f的值分别为 A.4,6,10 B.4,7,11 C.4,6,12 D.4,7,12 11、设以下变量均为int类型，则值不等于7的表达式是 A.（x=y=6, x+y, x+1） B.（x=y=6, x+y, y+1） C.（x=6, x+1, y=6, x+y） D.（y=6, y+1, x=y, x+1） 12、设有说明“int a, b, c; a=b=c=5;”,执行语句“b+=++a>b&&++c>b;”,则 a、b、c的值分别是 A. 6、6、5 B. 6、1、6 C. 6、7、6 D. 6、6、6 13、在C++语言中，要求操作数必须是整型的运算符是 A. / B. ++ C. != D. % 14、若x和y都是int型变量,x=100,y=200,则下面程序片段cout<<(x,y)< A.200 B.100 C.100 200 D.输出格式符不够,输出不确定的值 15、设有下列语句“int x; x=’f’－5;”,则x的值为 A.a B.97 C.107 D.64 16、设有说明“int x=5,y=7,z=8;”, 则执行表达式“z+=x++||y++||++z;”后，x,y,z的值为（注意表达式的优化问题） A.6,7,9 B.6,8,10 C.6,8,8 D.6,8,1 二、填空题 1. C++目标程序经______________后生成扩展名为exe的可执行程序文件。 2. 如果要把从键盘上输入的每个字符，包括回车或空格赋给字符变量ch，应该 应执行的语句______________。 3. sizeof运算符的作用是______________。 4. 已知x为float型，执行语句 (int)x 之后，x为______________类型。 5. ‘a’和“a”占用的内存字节数分别为______________和______________。 6.设有变量说明:int a=3,b=4,c=5;运行表达式(a=c)&&(b=c)后, 表达式的结果 是，a,b,c的值分别是。 7. 在C++中，有两种注释方法，分别是：____________和_____________________。 8. 设有语句：int b1,b2;unsigned char c=254;char d=254;b1=c;b2=d; 则b1的值是_______________,b2的值是_______________。 Unit1 Ways of Learning Vocabulary I 1. 1)insert 2)on occasion 3)investigate 4)In retrospect 5)initial 6)phenomena 7)attached 8)make up for 9)is awaiting 10)not; in the least 11)promote 12)emerged 2. 1) a striking contrast between the standards of living in the north of the country and the south. 2)is said to be superior to synthetic fiber. 3)as a financial center has evolved slowly. 4)is not relevant to whether he is a good lawyer. 5)by a little-known sixteen-century Italian poet have found their way into some English magazines. 3. 1)be picked up; can’t accomplish; am exaggerating 2)somewhat; the performance; have neglected; they apply to 3)assist; On the other hand; are valid; a superior II 1. 1)continual 2)continuous 3)continual 4)continuous 2. 1)principal 2)principal 3)principle 4)principles 5)principal III 1.themselves 2.himself/herself 3.herself/by herself/on her own 4.itself 5.ourselves 6.yourself/by yourself/on your own Comprehensive Exercises I.cloze 1. 综合教程1课后答案 Unit 1 College Life Enhance Your Language Awareness Words in Action 1. (P.23) 1) deliver 2) polish 3) available 4) latter 5)file 6) thrive 7) undertook 8) practical 9) fulfill 10) perceived 11) accumulated 12) multiplied 2. (P.24) 1)compromise 2) self-induced 3) steered 4) frame 5)demonstrated 6) employ 7) promote 8) impressed 9)contribution 10) deliberately 11) financial 12) economic 3.(P.24) 1)makes a point of 2) refresh my memory 3) lead to 4) at hand 5) working out 6) under pressure 7) Last but not least 8) down 9) In addition to 10) were involved 11) in other words 12) pointed out 13) pay off 4. (P.25) 1) scored 2) scheduled 3) assigned 4) motivated 5) crucial 6) promote 7) perform 8) debate 9) scanned 10) devised 11) advocated 12) clarify 13) priorities 14) compromised 15) context 16) undertook Final sentence: academic excellence Increasing Your Word Power 1.( P.26~27) 1)principal/ major 2) top 3) major 4) top 5)principal 6) major 7) schedule 8)advocate/have advocated 9) top 10) approach 11)blame 12) major/ principal 13) advocate 14) schedule 15)blame 16) approaching 17) pressure 18) pace 19)pressured 20) pace Cloze (P.31) 1)academic 2) priorities 3) conducted 4) principles 5)begin 6) priority 7) compromised 8) addition 9)filling 10) Speaking 11) formula 12)Participation/ Participating 13) based 14) least 15)way 16) pressure Unit 1 lexf Organization II. More Synonyms in Context 1) During the First World War, battles occurred here and there over vast areas. Some of the most dramatic fighting took place in the gloomy trenches of France and Belgium. 2) Elizabeth made careful preparations for the interview and her efforts / homework paid off. 3)1 spent hours trying to talk him into accepting the settlement, but he turned a deaf ear to all my words. 4) Pneumonia had severely weakened her body, and I wondered how her fragile body could withstand the harsh weather. - 90 - Appendix I III. Usage 1)But often it is not until we fall ill that we finally learn to appreciate good health. 2)A rich old lady lay dead at home for two weeks—and nobody knew anything about it. 3)It's said he dropped dead from a heart attack when he was at work 1)Don't sit too close to the fire to keep warm—you could easily get burned, especially if you fall asleep. 4)In those days people believed in marrying young and having children early. 5)Little Tom was unable to sit still for longer than a few minutes. ■ Structure 1. 1) To his great delight, Dr. Deng discovered two genes in wild rice that can increase the yield by 30 percent. 2)To her great relief, her daughter had left the building before it collapsed. 3)To our disappointment, our women's team lost out to the North Koreans. 4)We think, much to our regret, that we will not be able to visit you during the coming Christmas. 2. 1) These birds nest in the vast swamps (which lie to the) east of the Nile. 2)By 1948, the People's Liberation Army had gained control of the vast areas north of the Yangtze River. 3)Michelle was born in a small village in the north of France, but came to live in the United States at the age of four. ■ 4) The Columbia River rises in western Canada and continues/runs through the United States for about 1,900 kilometers west of the Rocky Mountains. Comprehensive Exercises I. Cloze (A) 1. invasion 3. Conquest 5. launching 7. campaign 9. reckon with 2. s tand in the way 4. c atching... off his guard 6. d eclaration 8. d rag on 10. b ringing...to a 能力提升测试题 （时间60分钟，满分100分） 第Ⅰ卷（选择题，共40分） 一、选择题(每小题2分，共40分) 1、一正弦交流电压波形如图1-1所示，其瞬时表达式是( ) A 、u ＝10sin(ωt －π2 )V B 、u ＝52sin(ωt ＋π)V C 、u ＝10sin(ωt －π)V D 、u ＝52sin(ωt －π2 )V 图1-1 图1-2 2、如图1-2所示，正弦交流电路中(X L ≠X C )，电流i 与电压u 的相位关系是( ) A 、同相 B 、相差90° C 、相差120° D 、反相 3、如图1-3所示，下列说法正确的是 ( ) A 、电压有效值比电流有效值大 B 、电压、电流的频率不一定相同 C 、电流超前电压45° D 、电流滞后电压15° 图1-3 图1-4 4、标的额定值“220V ,100W ”的灯泡，将它接在u ＝2202sin(314t ＋30°)V 的正弦交流电源上，它消耗的功率为( ) A 、小于100W B 、大天100W C 、等于100W D 、不确定 5、已知某正弦交流电流，当t ＝0时，瞬时值i o ＝20A ，初相位为φo ＝45°，则这个交流电的有效值为( ) A 、20A B 、202A C 、14.14A D 、10A 6、10A 的直流电和10A 的交流电分别通过阻值为10Ω的电阻，在相同的时间内所产生的热量，相比之下（ ） A 、10A 的直流电产生的热量多 B 、10A 的交流电产生的热量多 C 、10A 的直流电与10A 的交流电产生的热量一样多 D 、无法确定 7、关于u=380sin(31.4t-310°)A 说法正确的是 ( ) A 、该电压的有效值为220A B 、该交流电压的频率为50HZ C 、该交流电2S 内可完成10次周期性变化 D 、该交流电压的初相为-310° 8．如图1-4所示交流电路中，若R=X C ，则( ) A 、u 1和u 2的频率不一定相同 B 、u 1有效值是u 2有效值的2倍 C 、u 1滞后u 2 6π D 、u 1超前u 2 4 π 大学英语综合教程2课后答案 Unit 1 Text A Vocabulary I. 1.1) insert 2) on occasion 3) investigate 4) In retrospect 5) initial 6) phenomena 7) attached 8) make up for 9) is awaiting 10) not?in the least 11) promote 12) emerged 2. 1) There is a striking contrast between the standards of living in the north of the country and the south. 2) Natural fiber is said to be superior to synthetic fiber. 3) The city’ s importance as a financial center has evolved slowly. 4) His nationality is not relevant to whether he is a good lawyer. 5) The poems by a little-known sixteenth-century Italian poet have found their way into some English magazines. 3. 1) be picked up, can’ t accomplish, am exaggerating 2) somewhat, performance, have neglected, they apply to 3) assist, On the other hand, are valid, a superior II. 《全新版大学英语综合教程1 课后翻译及答案》Unit 1 Growing Up 为自己而写 ——拉塞尔·贝克 从孩提时代，我还住在贝尔维尔时，我的脑子里就断断续续地转着当作家的念头，但直等到我高中三年级，这一想法才有了实现的可能。在这之前，我对所有跟英文课沾边的事都感到腻味。我觉得英文语法枯燥难懂。我痛恨那些长而乏味的段落写作，老师读着受累，我写着痛苦。弗利格尔先生接我们的高三英文课时，我就准备着在这门最最单调乏味的课上再熬上沉闷的一年。弗利格尔先生在学生中以其说话干巴和激励学生无术而出名。据说他拘谨刻板，完全落后于时代。我看他有六七十岁了，古板之极。他戴着古板的毫无装饰的眼镜，微微卷曲的头发剪得笔齐，梳得纹丝不乱。他身穿古板的套装，领带端端正正地顶着白衬衣的领扣。他长着古板的尖下巴，古板的直鼻梁，说起话来一本正经，字斟句酌，彬彬有礼，活脱脱一个滑稽的老古董。 我作好准备，打算在弗利格尔先生的班上一无所获地混上一年，不少日子过去了，还真不出所料。后半学期我们学写随笔小品文。弗利格尔先生发下一张家庭作业纸，出了不少题目供我们选择。像"暑假二三事"那样傻乎乎的题目倒是一个也没有，但绝大多数一样乏味。我把作文题带回家，一直没写，直到要交作业的前一天晚上。我躺在沙发上，最终不得不面对这一讨厌的功课，便从笔记本里抽出作文题目单粗粗一看。我的目光落在"吃意大利细面条的艺术"这个题目上。 这个题目在我脑海里唤起了一连串不同寻常的图像。贝尔维尔之夜的清晰的回忆如潮水一般涌来，当时，我们大家一起围坐在晚餐桌旁——艾伦舅舅、我母亲、查理舅舅、多丽丝、哈尔舅舅——帕特舅妈晚饭做的是意大利细面条。那时意大利细面条还是很少听说的异国食品。多丽丝和我都还从来没吃过，在座的大人也是经验不足，没有一个吃起来得心应手的。艾伦舅舅家诙谐有趣的场景全都重现在我的脑海中，我回想起来，当晚我们笑作一团，争论着该如何地把面条从盘子上送到嘴里才算合乎礼仪。 突然我就想描述那一切，描述当时那种温馨美好的气氛，但我把它写下来仅仅是想自得其乐，而不是为弗利格尔先生而写。那是我想重新捕捉并珍藏在心中的一个时刻。我想重温那个夜晚的愉快。然而，照我希望的那样去写，就会违反我在学校里学的正式作文的种种法则，弗利格尔先生也肯定会打它一个不及格。没关系。等我为自己写好了之后，我可以再为弗利格尔先生写点什么别的东西。 等我写完时已是半夜时分，再没时间为弗利格尔先生写一篇循规蹈矩、像模像样的文章了。第二天上午，我别无选择，只好把我为自己而写的贝尔维尔晚餐的故事交了上去。两天后弗利格尔先生发还批改过的作文，他把别人的都发了，就是没有我的。我正准备着遵命一放学就去弗利格尔先生那儿挨训，却看见他从桌上拿起我的作文，敲了敲桌子让大家注意听。 "好了，孩子们，"他说。"我要给你们念一篇小品文。文章的题目是： 吃意大利细面条的艺术。" Key to book4 un it1-4 Unit 1 Active readi ng (1) Look ing for a job after uni versity? First, get off the sofa Read ing and un dersta nding Dealing with unfamiliar words 3 Match the words in the box with their definitions. 1 to make progress by moving to the n ext stage in a series of acti ons or events (proceed) 2 the process of cha nging from one situati on, form or state to ano ther (tra nsiti on) 3 not feeli ng in volved with some one or someth ing in a close or emoti onal way (detached) 4 referri ng to somethi ng which will happe n soon (upco ming) 5 to be sitting still in a position that is not upright (slump) 6 to retur n to a previous state or way of behav ing (revert) 7 to say what happe ned (reco unt) 4 Complete the paragraph with the correct form of the words in Activity 3. It isn ' t easy to make the (tr)a nsiti on from a busy uni versity stude nt to an un employed young adult (2) slumped on a bar stool or half watch ing a min dless televisi on show, wondering if and how their career is going to (3) proceed . Many people who have experie need a long period of in activity like this, whe n (4) reco un ti ng how they felt at the 《电子测量仪器》考核试题五 注意事项 1、考试时间：120分钟。 2、请首先按要求在试卷的标封处填写您的姓名、准考证号和所在单位的名称。 3、请仔细阅读各种题目的回答要求，在规定的位置填写您的答案。 4、不要在试卷上乱写乱画，不要在标封区填写无关的内容。 一、选择题：(选择一个正确的答案，将相应的字母填入题内 的括号中，每小题2分，共30分。) 1.根据测量误差的性质和特点，可以将其分为( )三大类。 A.绝对误差、相对误差、引用误差 B.固有误差、工作误差、影响误差 C.系统误差、随机误差、粗大误差 D.稳定误差、基本误差、附加误差 2.用通用示波器观测正弦波形，已知示波器良好，测试电路正常，但在荧光屏上却出现了如下波形，应调整示波器( )旋钮 或开关才能正常观测。 A.偏转灵敏度粗调 轴位移 轴位移 D.扫描速度粗调 3.通用计数器测量周期时由石英振荡器引起的主要是( )误差。 A.随机 B.量化 C.变值系统 D.引用 4的读数误差通常来源于( )。 A.刻度系数、非线性等 B.量化 C.偏移 D.内部噪声 5.( )具有高的，但测量速率较低。 A.逐次逼近比较式 B.斜坡电压式 C.双斜积分式式 6.在相同条件下多次测量同一量时，随机误差的（ )。 A．绝对值和符号均发生变化Ｂ. 绝对值发生变化，符号保持恒定 C.符号发生变化，绝对值保持恒定 D.绝对值和符号均保持恒定 7.要测量一个10V左右的电压，手头有两块电压表，其 中一块量程为150V，1.5级，另一块为15V，2.5级，选用（）. A.两块都一样 B.150V，1.5级 C.15V，2.5级 D.无法进行选择 8.下列测量中属于电子测量的是（）。 A、用天平测量物体的质量 B、用水银温度计测量温度 C、用数字温度计测量温度 D、用游标卡尺测量圆柱体的直径 9.交流电压表都按照正弦波电压( )进行定 度的。 A.峰值 B. 峰—峰 值 C.有效值 D.平均值 10.万用表使用完毕后，一般应把转换开关旋至（）。 A 电阻X10KΩ档 B 交流电压最高档 C任意档 D 档 11.选择电压表电流表量程时，一般把被测量范围选取在仪表标 度尺满刻度的（）。 A. 1/2区域以上 B. 1/3区域以上 C. 2/3区域以上 D.任意区域 12.数字“34.585”保留4位有效数字，修约后为( )。 A、 34.58 B、 34.57 C、 34.59 D 、 34.56 全新版大学英语(第二版)综合教程2课后答案及翻译 9大学英语练习册2 9单元1 ★课文a 词汇I. 1.1)插入2)在场合3)调查4)回顾5)最初的现象 7)附上8)弥补9)正在等待10)不…至少11)促进1 2)出现 2。这个国家的北部和南部的生活水平有着鲜明的对比。据说天然纤维优于合成纤维。这座城市作为金融中心的重要性发展缓慢。4)他的国籍与他是否是一名好律师无关。一位鲜为人知的16世纪意大利诗人的诗被一些英文杂志转载。 3。1)捡起来，不能完成，有点夸张 2)表现，忽略了，他们申请3)协助，另一方面，是有效的，一个上级2。 1。1)连续2)连续3)连续4)连续 2。1)原则2)原则3)原则4)原则5)原则3。 1。他们自己2。他/她自己3。她自己/独自/独自一人。本身5。我们自己。你自己/你自己/你自己的综合练习一。完形填空 1。1)对比2)夸大3)优先级4)另一方面5)提升 6)拾起7)协助8)完成9)偶尔10)忽略 11)值得的12)优越的 2。1)结束2)执行3)面对4)胜任5)装备 6)设计7)方法8)休息9)绝对10)质量 2。翻译 1。1)背离传统需要巨大的勇气。汤姆过去很害羞，但这次他足够大胆，在一大群观众面前表演了一场。 3)许多教育者认为在孩子很小的时候培养他们的创新精神是可取的。假设这幅画真的是一幅杰作，你认为它值得买吗？ 5)如果数据在统计上是有效的，它将揭示我们正在调查的问题。2。为了提高我们的英语，多读、多写、多听、多说是至关重要的。此外，背诵尽可能多的好文章也很重要。如果你头脑中没有大量优秀的英语写作，你就不能用英语自由地表达自己。在学习过程中总结我们的经验也是有帮助的，因为这样做，我们可以找出哪种学习方式更有效，会产生最理想的结果。只要我们继续努力，我们将在适当的时候完成掌握英语的任务。★文本B 理解检查:c c d a c b语言练习1。g h e c f a b d 2。1)采用2)账户3)从你的角度来看4)最终5)此外6)基金7)年度跟踪9)步调10)打算11)观点12)设计 单元2 ★文本A词汇表 1。1.1)突如其来的情感3)祝福4)磨损5)日期 6)后果7)似乎8)与9)好奇10)真正的11)主要是12)情感 2)相反。1)当你面临不止一个问题时，先试着解决最简单的一个。水对于所有生命形式的存在都是至关重要的。 Key to Exercises (unit 1) Vocabulary: I. 1). respectable 2) .agony 3). put down 4). sequence 4). rigid 5). hold back 6). distribute 7). off and on 8). vivid 9). associate 10). finally 11). turn in 12). tackle 2. 1) has been assigned to the newspaper’s Paris office 2) was so extraordinary that I didn’t know whether to believe him or not 3) a clear image of how she would look in twenty year s’ time 4) gave the command the soldiers opened fire 5) buying bikes we’ll keep turning them out 3.1) reputation/rigid / to inspire 2) and tedious / what’s more / out of date ideas 3) compose / career / avoid showing / hardly hold back II. 1). composed 2). severe 3) agony 4). extraordinary 5). recall 6). command 7). was violating 8). anticipate III. 1. at 2. for 3. of 4. with 5. as 6. about 7. to 8. in 9. from 10. on/upon Comprehensive Exercises (A) (1) hold back (2) tedious (3) scanned (4) recall (5) vivid (6) off and on (7) turn out/in (8) career (B) (1) last (2) surprise (3) pulled (4) blowing (5) dressed (6) scene (7) extraordinary (8)image (9)turn (11) excitement II. Translation 1 1) As it was a formal dinner party, I wore formal dress, as Mother told me to. 2) His girlfriend advised him to get rid of /get out of his bad habit of smoking before it took hold. 3) Anticipating that the demand for electricity will be high during the next few months, they have decided to increase its production. 4) It is said that Bill has been fired for continually violating the company’s 1.Only those who have lived through a similar experience can fully appreciate this. 只有那些有过类似经历的人，才能够完全理解这一点。 2. Scientists have been hard pressed to figure out how these particles form and interact . 科学家一直没弄明白这些粒子是怎么形成的、又是如何相互作用的。 3. I’d like to express my special thanks to everyone who has contributed over the years in one way or another. 我要特别感谢每一个在这些年来以不同方式作出贡献了的人。 4. The individual success of the employees in a team environment results in success for the company. 团队环境中员工个人的成功能带来公司的成功。 5. The war, although successful in military terms, left the economy almost in ruins. 这场战争，虽说从军事角度而言是成功的，却另经济几乎崩溃。 6. He decided to channel his energies into something useful, instead of being glued to the TV set all day. / instead of sitting in front of the TV set all day long. 他决定把自己的精力用在有益的事上，而不是整天守在电视机前。 7. There is a difference between strength and courage. It takes strength to survive. It takes courage to live. 力量与勇气是有区别的。生存需要力量，生活需要勇气。 8. She was by nature a very affectionate person, always ready to give a helping hand to others. 她天生是个温柔亲切的人，总是乐于向别人伸出援手。 Unite 6 1.It is only by trail and error that we learn and progress / make progress. 只有通过反复实践我们才能学习和进步。 2.You should know that the education of the heart is very important. It will distinguish you from others. 你应该知道心灵的教育是很重要的。它会使你与众不同。 3. A person who strives for perfection tends to have a low threshold of pain. Things around bother them. 一个追求完美的人对痛苦的容忍度往往很低。周围的事物都会让他们看不顺眼。 4.They regard honesty as a matter of principle and they are willing to sacrifice everything for its sake. 他们认为正直是个原则问题，愿意为之牺牲一切。 6.People judge you by the company you keep. You are inviting trouble if you get into bad company. 人们根据你交往的朋友来判断你。如果与坏人为伍，你就是自找麻烦。 6) Speaking your mind without regard to other people’s feelings is not a virtue. 直言不讳、不顾其他人的感受不是一种美德。 7) Her sensitivity exposes her to more suffering and pain than ordinary people can imagine. 她的敏感另她承受的痛苦比普通人所能想象的要多。 8) We must awaken people to the need to protect our environment. 我们必须使人们意识到保护坏境的必要性。 综合教程4课后答案 Handouts and Key to book4 unit 1-4 Unit 1 Active reading (1) Looking for a job after university? First, get off the sofa Background information About the passage: This is an article by an Education Correspondent, Alexandra Blair, published in September 2008 in The Times, a long-established British quality newspaper. In Europe generally, and in Britain in particular, for a number of years there has been a r i s i ng nu mber of stude nts who go to uni vers ity and therefore more new graduates seeking employment. However, for many graduates finding a job became harder in 2008 - 2009 because the economic downturn - then a rcccssion - meant that many employers werereducing their workforce. After their final exams, some students rested in the summer before looking for jobs and then they found that it was difficult to find employment in their field or at the level they wanted. The 电工技术基础试题 课程代码:02232 第一部分选择题(共30分) 一、单项选择题（本大题共15小题，每小题2分， 共30分）在每小题列出的四个选项中只有一个选项是 符合题目要求的，请将正确选项前的字母填在题后的括号内。 1.题1图所示电路中D为参考点,当开关S打开时B点的电位是( ) 2.题2图所示为某电路中的一条含源支路,已知E=20V，I=2A，R=10，则电压U BA= （） 3.电路如题3图所示，已知电流等于（） A. B. C. D. 4.电路如题4图所示，设各电流表内阻为零。若电流表A的读数为3A,电流表A1的读数为1A，则电流表A2的读数是（） A. 2A B.A D.A 5.下面的结论中,正确的是( ) A.空心励磁线圈所产生磁场和铁心励磁线圈所产生磁场的B—H关系均为非线性 B.空心励磁线圈所产生磁场和铁心励磁线圈所产生磁场的B—H关系均为线性 C.空心励磁线圈所产生磁场的B—H关系为线性、 铁心励磁线圈所产生磁场的B—H关系为非线性 D.空心励磁线圈所产生磁场的B—H关系为非线性、铁心励磁线圈所产生磁场的B—H关系为线性 6.交流铁心线圈如题6图所示。保持电源电压U、频率及线圈匝数N不变,将铁心A、B段锯开,形成气隙。则铁心中的磁通最大值将（） A. 不变 B.变小 C.变大 D.不定 7.某三相异步电动机的电源频率为50Hz,额定转速为1455r/min，相对应的转差率为（） 8.电动机的机械特性曲线如题8图所示,则该电动机为（） A. 他励直流电动机 B.并励直流电动机 C.串励直流电动机 D.三相异步电动机 9.直流测速发电机输出电压的大小与转速高低成( ) A.平方关系 B.反比关系 C.正比关系 D.非线性关系 10.熔断器在电路中的作用是( ) A.短路保护 B.过载保护 C.失压保 护 D.欠电压保护 11.继电一接触器控制电路如题11图所示(主电路略)。接触器KM控制电动机M的起、停。该控制电路的错误之处是( ) A.电动机不能起动 B.无失压保护 C.按起动按钮后将造成电源短路 D.电动机起动后不能停转 全新版大学英语综合教程（第二版）2 TextA参考答案 Unit 1 Text A After listening 1. much more advanced 2. apply some academic pressure, gave in to his pleas/gave up 3. a duck takes to water 4. memorizing (stuff), thinking 5. ample space to grow Text Organization 1-1 The text begins with an anecdote. 1-2 His thoughts are mainly about different approaches to learning in China and the West. 1-3 He winds up the text with a suggestion in the form of a question. 2. 1, show a child how to do something, or teach by holding the hand; teach children that they should rely on themselves for solutions to problems. 2,give greater priority to developing skills at an early age,believing that creativiy can be promoted over time. Put more emphasis on fostering creativity in young children, thinking skills can be picked up later. Language Sense Enhancement (1) summarizing (2) value originality and independence (3) contrast between (4) in terms of (5)harbor (6)fearful (7) comparable (8) promote creativity (9)emerge (10) picked up 【一】全新版大学英语综合教程1课后 题 Unit 1 Growing Up Part II Language Focus Vocabulary Ⅰ.1. 1.Respectable 2.agony 3.put…down 4.sequence 5.hold back 6.distribute 7.off and on 8.vivid 9.associate 10.finally 1.turn in 2.tackle 2. 1.has been assigned to the newspaper’s Paris office. 2.was so extraordinary that I didn’t know whether to believe him or not. 3. a clear image of how she would look in twenty years’ time. 4.gave the command the soldiers opened fire. 5.buying bikes we’ll keep turning them out. 3. 1.reputation, rigid, to inspire 2.and tedious, What’s more, out of date ideas https://www.360docs.net/doc/ed7124758.html,pose, career, avoid showing, hardly hold back Ⅱ. https://www.360docs.net/doc/ed7124758.html,posed 2.severe 3.agony 4.extraordinary 5.recall https://www.360docs.net/doc/ed7124758.html,mand 7.was violating 8.anticipate Ⅲ. 1.at 2.for 3.of 4.with 5.as 6.about 7.to 8.in, in 全新版大学英语综合教程4【第二版】习题答案 主编：李荫华 上海外语教育出版社 Unit 1 Part II Text A lexf Organization Parts Paragraphs Main Ideas Part One Paras 1-2 Introduction — Both Napoleon's and Hitler's military campaigns failed because of the severity of the Russian winter. Part Two Paras 3-11 Napoleon's military campaign against Russia Part Three Paras 12-20 Hitler's military campaign against the Soviet Union Part Four Para 21 Conclusion—the elements of nature must be rekoned with in any military campaign. 2. Sections Paragraphs Main Ideas Section One Paras 12-13 Hitler's blitzkrieg against Russia and Stalin's scorched earth policy Section Two Paras 14-18 the battles fought at Leningrad, Moscow and Stalingrad Section Three Paras 19-20 the Russian counter-offensive and the outcome of the war Vocabulary I. 1. 1) alliance 2) at the cost of 3) stroke 4) limp 5) minus 6) regions 7) declarations 8) siege 9) raw 10) bide his time 11) have taken their toll 12) in the case of 2. 1) is faced with 2) get bogged down 3) is pressing on / pressed on 4) drag on 5) get by 6) dine out 7) have cut back 8) get through 3. 1) The rapid advance in gene therapy may lead to the conquest of cancer in the near future. 2)Production in many factories has been brought to a halt by the delayed arrival of raw materials due to the dock workers’ strike 3)Sara has made up her mind that her leisure interests will/should never get in the way of her career. 4) Obviously the reporter's question caught the foreign minister off guard. 5)The introduction of the electronic calculator has rendered the slide rule out of date /obso lete. 4.1) Being faced with an enemy forces much superior to ours, we had to give up the occupation of big cities and retreat to the rural and mountainous regions to build up our bases. 2) Unity is crucial to the efficient operation of an organization. Failure to reckon with this problem will weaken its strength. In many cases,work may be brought to a halt by constant internal struggle in an organization. 3) The Red Army fought a heroic battle at Stalingrad and won the decisive victory against the Germans. In fact, this battle turned the tide in the Second World War. During this famous battle, the Soviet troops withstood the German siege and weakened the German army by launching a series of counterattacks.全新版大学英语综合教程2[第二版]课后答案解析
综合教程1课后答案
(完整版)全新版大学英语第二版综合教程4课后答案全
电工技术基础试题
大学英语综合教程2课后答案
全新版大学英语_综合教程1_课后翻译与答案
新标准大学英语综合教程4课后答案
电工技术基础与技能考核试题一
全新版大学英语(第二版)综合教程2课后答案及翻译
全新版大学英语综合教程1课后答案
新世纪大学英语综合教程2课后答案(全)
新标准大学英语综合教程4课后答案
电工技术基础试题
综合教程2课后答案
全新版大学英语综合教程(第二版)1课后题答案全集(可打印)
全新版大学英语综合教程4【第二版】完整版课后答案