电信专业英语期末试卷B及部分谜底
电子信息专业英语考试试卷及参考答案
密封 线密 封 线 内 不 得 答 题院系 班级 _____________ 读写组 姓名 学号2018至2019学年第一学期期末考试电子信息类专业英语（闭卷）课程性质：必修 考核方式：考试 专业：计算机学院2018级注意事项：1、 答卷必须用黑色或蓝色笔作答，不许使用铅笔或红色笔；2、 本卷共五大题，满分100分，考试时间90分钟。
1.cur rent________________ (电流） 2. y in dustr________________ (工业) 3. pany com ________________(公司)4. app ly________________(应用) 5. po wer (能量) 6.sym bol (符号)7.de dio (二极管) 8.Vo lt age(伏特) 9. resi stor(电阻)10. vi deo(录像)（ ）1.digital （ ）2. transmit （ ）3. signal （ ）4. resistor （ ）5. switch （ ）6. work （ ）7.electricity （ ）8. device ( ) 9.media ( ) 10. circuit A. 设备 B. 电路 C. 媒体 D. 数字的 E. 传输 F. 电阻 G. 工作H.信号I. 开关J. 电（ ）1. alternating current (AC) A. 数字电视 （ ）2. DTVB. 失去控制（ ）3. Integrated Circuits(ICs) C. 交流电 （ ）4. out of control D. 集成电路 （ ）5. logic gate E. 宽频带 （ ）6. FMF. 逻辑门 （ ）7. direct current (DC)G. P 型结 （ ）8. P-type regionH. 在控制之下 （ ）9. under controlI. 直流电 （ ）10. widebandJ. 频率调制I. Spell the English words with the given letters according to the Chinese given. (20 points, 2 points for each) 用所给字母拼写出符合汉语意思的单词。
高职专业英语电子信息技术期末卷
2013～2014学年第一学期1106-1107班《电子信息技术专业英语》期末考试试卷（考试时间90分钟）一、单词翻译（20%）1. component 11. switch2. circuit 12. device3. resistor 13. instruction4. capacitor 14. junction5. diode 15. combination6. transistor 16. manufacture7. current 17. structure8. voltage 18. principle9. amplifier 19. wafer 10. insulator20. analog二、词组互译（20%） 1. electronic circuit 11. 广泛应用于 2. variable resistor 12. 把…. 分成…… 3. direct currents 13. 打算…… 4. integrated circuit 14. 根据…… 5. forward bias 15. 将…..应用于 6. N-type material 16. 提到、指 7. electronic counter 17.由……组成 8. frequency synthesizer 18. 用做…… 9. digital instrument 19. 被称做…… 10. operational amplifier 20. 形成三、判断正误，用“T ”或“F ” 表示(10%)1. The conductivity of semiconductors is higher than that of insulators But lower than that of conductors. ( )2. Silicon materials can conduct electricity when they are in purestate. ( )3. A semiconductor of n-type means that the pure material have been added impurities with three outer electrons. ( )班级 学号 姓名4. It is called forward bias if a diode is connected to an external voltage to make the p-type region positive and the n-type region negative. ( )5. An n-type and a p-type material created side by side can form a p-n junction. ( )四、回答问题（15%）1. What component can restrict the flow of electrons?2. What component can be used to change AC into DC?3. What component can amplify small signal?4. Material can be divided into three types, what are they?5. What function can integrated circuits perform?五、句子互译（20%）1. 晶体管的作用类似一个开关。
(完整版)电子信息专业英语试卷B
一、根据英文单词写出中文词义（每题1分共20分）silicon 硅2 power dissipation 功耗3 flip flop 触发器4 base band 基带5 micron 微米6 assembly language 汇编语言7 transient response 瞬态响应8 quality factor 品质因子9 power supply 电源10. quantization level 量化电平11. undersampling 欠采样12. dielectric 介电的13. decibel 分贝14. duty cycle 占空比15. transducer 传感器16. emulation 仿真17. power-up 加电18. buffer 缓冲器19. semi-custom 半定制20. synthesis 综合二、根据中文词义写出英文单词（每题1分共20分）1. 电流源current source2．晶体管transistor3．周期period4．稳定性stability5．矢量vector6．复位reset7．除法division8．振荡器oscillator9．锁存器latch10．滤波器filter11．电感inductance12．电容capacitance13．寄存器register14．正反馈positive feedback15．并联parallel16．谐振resonance17. 晶体crystal18．原理图schematic19．整流器rectifier20．增益gainWhat is a filter? A filter is a device that passes electric signals __at_ certain frequencies or frequency ranges __while_ preventing the passage of others.Filter circuits are used ___in____ a wide variety of applications. In the filed of telecommunication (在电信领域),band-pass filters are used in the audio frequency range (0kHz to 20kHz) for __modem and speech processing__ (调制解调器和语音处理).High-frequency band-pass filters(several hundred MHz) are used for ____channel selection_ (信道选择)in telephone central offices. Data acquisition systems usually require _anti-aliasing low-pass filters__（抗混叠低通滤波器) as well as low-pass noise filters in their preceding __signal conditioning_ (信号调理)stages. System power supplies often use band-rejection filters to suppress the 60-Hz frequency and high frequency transients. In addition, there are filters that do not filter_ (滤除)any frequencies of a complex input signal, but just add a ___linear phase shift__ (线性相移)to each frequency component，thus contributing a constant __time delay__（时延）.These are called ___all-pass filter__ (全通滤波器).At high frequencies (>1 MHz), all of these filters usually consist __of_ passive components __such as__ inductors (L), resistors (R), and capacitors(C). They are then __called______ LRC filters. In the low frequency range (1 Hz to 1 MHz), however, the inductor value becomes very large and the inductor itself gets quite bulky, ___making__ economical production difficult. In these _cases_____, _active filters_(有源滤波器) becomes important. Active filters are circuits that use _operational amplifier__ (运算放大器) as the active device ___in__ combination with some resistors and capacitors to provide an LRC-like filter performance at low frequency.四. 翻译（每题5分共40分）1. As in the first-order case, the second-order low-pass transfer function tends to zero as frequency tends to infinity.当频率趋近于无穷时，二阶低通滤波器的传输函数趋近于零（和一阶低通滤波器的传输函数一样）。
2014电子技术专业英语期末试题B卷LEO
广州工程技术职业学院机电工程（系）院 （2014—2015学年 第一学期） 《电子技术专业英语》期末考试试卷 B 卷共4页 2014年12月 考试形式：□开卷 √闭卷 考试时间：120分钟I. Multiplechoice(20’)1. The sixth power of two is .A. 12B. 36C. 642. Electrons, as one knows, are minute charge of electricity.A. negativeB. positiveC. reverse3. A resistor is an electrical component that the flow of electrical current.A. increasesB. resistsC. changes4. “The current is directly proportional to the voltages across it.” These can be described by formula _______.A. I=u/RB. p=u*IC. I=q/t5. The algebraic sum of the ________ entering any node is zero.A. currentB. reactanceC. voltage6. The conductivity of semiconductors is ______ than that of insulator but ________ than that of conductors.A. lower…lowerB. lower…higherC. higher….lower7. For a 4-band resistor with “color code ”, the first band is the values.A. hundredsB. tensC. ten8. An electronic device often used for amplifying voltage and current is _____________.A. diodeB. conductorC. transistor9. In a diode, current flows in ________ direction across the junction.A. only oneB. twoC. three班级___________ 姓名___________ 学号_____________--------------------------------------------------------------装订线------------------------------------------------10. A __________ amplifier provides signal amplification with little or no distortion, so that the output is proportional to the input.A. nonlinearB. linearC. electronicII. Match up(20’)1.模拟电子技术（）2.直流电路（）3.电子元件（）4.机械调节（）5.外阻（）6.放大器（）7.脉冲直流（）8.电压源（）9.系统设计（）10.逻辑运算（）（1）internal resistance （2）pulsating DC （3）voltage sources（4）logic circuits （5）analog electronics （6）logic operation（7）external resistance （8）number systems （9）direct current circuits （10）amplifier （11）mechanical adjust （12）digital logic circuits（13）system design （14）anode of diode （15）electrical componentsIII. phrase translation(20’)1. Passive electrical circuits2. Assembler language3. Specific meters4. Analog multimeter5. Semiconductor material6. Forward biased7. peak-to-peak voltage8. under this circumstance9. demodulating equipment10. Ohm's lawIV. Sentence tranlation(20’)1. The amount of current (I) flowing in a resistor is directly proportional to the voltage across it and inversely proportional to the resistance of the resistor.2. A multimeter is a general-purpose meter capable of measuring DC and AC voltage, current, resistance, and in some cases, decibels.3. The motherboard is the main circuit board inside the PC which holds the processor, memory and expansion slots and connects directly or indirectly to every part of the PC（Fig 9.1）.4. Moore's law, which predicted that the number of devices integrated on a chip would be doubled every two years, was accurate for a number of years.V. put the following into english(20’)C is commonly considered to be a structured language with some similarities to Pascal. In C, a block of code is a logically connected group of program statements that can be treated as a unit. You can create a block of code by placing lines of code between opening and closing curly braces. For example:if(x<10){printf (“too low, try again”);reset_counter(-1);}The two statements after "if" that are between the curly braces are executed if x is less than 10. These two statements with the braces represent a block of code. They are linked together: one of the statements cannot execute without the other also executing.。
2022年电大网考英语b大学英语b统考统考大学英语b交际用语题库全中文翻译
交际英语（5题，15分）79题中必有3题（重点是前45题）全中文翻译版：更好旳让你通过考试。
1 –Why didn’t you come to my birthday party yesterday?-- DA Excuse me , my friend set me a flowerB Fine, I never go to birthday partiesC Well, I do n’t like birthday partiesD Sorry, but my wife had a car accident---昨天你为什么不来参与我旳生日晚会？---不好意思，我太太出了个交通事故。
2 –This box is too heavy for me to carry upstairs?-- BA You may ask for helpB I’ll give you a handC Please do me a favorD I’d come to help---这个盒子对我来说太重了搬不到楼上去。
---让我帮你吧3 –That’s a beautiful dress you have on !-- AA Oh, thanks. I got it yesterdayB Sorry, it’s too cheapC You can have itD see you later--你穿旳这件裙子很美丽。
---噢，谢谢，我昨天买旳。
4 –David injured his leg playing football yesterday.--Really? C ?A Who did thatB What’s wrong with himC How did that happenD Why was he so careless--大卫昨天踢球时腿受伤了。
--真旳吗？那怎么发生旳啊？5 –Hi, is Mary there, please?-- AA Hold on. I’ll get herB No, she isn’t hereC Yes, she lives hereD Yes, what do you want?你好，请问玛丽在吗？不要挂机，我去叫她。
2019-2020年电大考试大学英语B统考历年试卷汇编
2019-2020年电大考试大学英语B统考历年试卷汇编英语B统考题库试卷1一、交际英语1、- Thank you ever so much for your lovely gift.- ________A：Never mindB：I'm glad you like it.C：Please don't say so.D：No, It's not so good.答案： B2、Would you go to the concert with me?__________, but I'm very busy now.A：I'd like toB：SureC：No problemD：Certainly答案： A3、- Thank you for inviting me.- ____________A：I really had a happy time.B：Oh, it's too late.C：Thank you for coming.D：Oh, so slowly?答案： C4、- Hello, I'm Harry Potter.- Hello, my name is Charles Green, but _____________.A：call my CharlesB：call me at CharlesC：call me CharlesD：call Charles me答案： C5、- Excuse me, could you show me the way to the nearest post office?- _________________ Oh yes! Two blocks away from here at the Green Avenue. You can't miss it.A：I beg your pardon?B：What do you mean?C：You're welcome.D：Mm, let me think.答案： D二、阅读理解1、 Mrs. Weeks was reading a newspaper story to her class. 威克斯老师正在读报纸上的一个故事给她班上的学生听。
电信专业英语期末试卷a及部分答案
考 生 信 息 栏系 专业 级 班级 姓名 学号 装 订 线20 07 －20 08 学年 第 1 学期课程名称 专业英语 试卷 卷别 A √ B □ 专业 级 班级 考试 方式 闭卷 √ 开卷 □ 本试卷共 八 大题( 6 页)，满分100分，考试时间120分钟。
请在答题纸上作答，在试卷上作答无效。
一、根据英文单词或词组，写出中文意思（本题共15小题，每题1分，共15分） 1. Semiconductor 半导体 2. amplitude 振幅 3. simultaneous 同时 4. slot 槽 5. protocol 协议 6. Bandwidth 带宽 7. Coaxial 同轴 8. Decode 解码 9. harmonic 谐波 10. Geostationary 地球静止轨道 11. flip-flop 触发器 12. uplink frequency spectrum 上行链路的频谱 13. peak-to-peak value 峰—峰值 14. home appliance 家电 15. distributed system 分布式系统二、根据英文缩写，写出英文完整形式及中文意思（本题共5小题，每题2分，共10分）1.ATM 自动取款机2.WAN 广域网3.ISDN 整体服务数位网路4.ISO 国际标准组织5.PCM 脉冲编码调制三、用连线使A栏与B栏匹配（本题共2大题，每题5分，共10分）1. Column A Column B(1) LAN (a) an international standards organization(2) WAN (b) a network that provides communications across country orthe entire world.(3) host computer (c) a station which is used to receive and retransmit microwavesignals.(4) ISO (d) a computer which is located on a network and providesservices to other nodes connected to the network.(5) Microwave relay (e) a network that provides communications within specificbuildings or facilities.2. Column A Column B(1) voice channel (a) one of the typical mobile communication systems(2) MSC (b) the medium used to carry calls from one point to another(3) PSTN (c) radio station used within mobile communications fortransmission to mobiles or to other base stations(4) BS (d) public network which provides dial-up(拨号)access and hasbeen primarily designed to carry voice(5) CMS (e) an interface between the radio system and the PSTN, wherecalls to and from the mobile subscribers are switching四、选择适当的词或词组填空（本题共5空，每空1分，共5分）考 生 信 息 栏系 专业 级 班级 姓名 学号 装 订 线1. The current which flows through R L ______ (is equal to, equals to) the input voltageU i divided by R i .2. The switch, resistor and wire______ (are composed of, constitute) a circuit.3. The use of mobile telephone is quite ______ (familiar with, familiar to) us in ourdaily lives.4. ATM retains(保留)all the flexibility(灵活性)of packet mode, _____(enabling,enable) only required information _____ _ (to be conveyed, convey). 五、选择适当的词填空 （本题共5小题，每题1分，共5分） 1. The word “multimedia ” is ______ describe a mixture(混合)of hardware, software and applications. A. being used to B. used C. using to 2. The pulse is composed of _____ states. A. one B. two C. three 3. ATM transfer information ____ short packets called “cells ”(信元) _____ a fixed length of 48 bytes plus five heads bytes. A. of, in B. in, with C. to, for 4. The function of the optical detector is to ______. A. convert optical signal to electrical signal B. convert electrical signal to optical signal C. the electrical signal is applied to it 5. Each channel unit in the BS is equipped _____ radio transmitter, radio receiver, and control unit. A. in B. with C. by 六、阅读理解 （本题共5小题，每题3分，共15分） (1) Integrated Circuit Integrated circuit, or IC is a combination of a few interconnected circuit elements such as transistors, diodes, capacitors, and resistors produced in a single manufacturing process on one and the same bearing structure, called the substrate, and intended to perform definite function involved in converting information. The electrically interconnected components that make up an IC are called integrated elements. If an integrated circuit includes only one type of components, suchas only diodes or resistors, it is said to be an assembly or set of components.The principle of integrated circuit elements lies in the following. A great number of “set” are produced simultaneously on a wafer. Each set contains all the components such as transistors, diodes, and resistor which are interconnected with short fine metallic stripes deposited on the wafer surface. They make up an functional block. Each ICs of components is a ready integrated circuit. All ICs are regularly distributed on the wafer surface.ICs can be classified by function into two: circuits to be applied in digital systems and those to be applied in linear systems. The digital ICs are employed mostly in computers, electronic counters, frequency synthesizers and digital instruments. And the analog, or linear ICs operate over a continuous range, and include such devices as operational amplifiers.The invention of IC is a great revolution in the electronic industry. Sharp size, weight reductions are possible with these techniques; and more importantly, high reliability, excellent functional performance, low cost and low power dissipation can be achieved.Questions for text:1.What types of elements may integrated circuits possibly include?2.Tell some advantages of using integrated circuits.(2)Pulse-Code ModulationPulse-Code Modulation (PCM) is the most basic form of digital pulse modulation. In pulse-code modulation, a message signal is represented by a sequence of coded pulses, which is accomplished by representing the signal in discrete form in both time and amplitude. The basic operations performed in the transmitter of PCM are sampling, quantizing, and encoding. The quantizing and encoding operations are usually performed in the same circuit, which is called analog-to-digital converter. The basic operations in the receiver are regeneration of impaired signals, decoding, and reconstruction of the train of quantized samples. In what follows, we describe the various operations that constitute a basic PCM system.Sampling. The incoming message signal is sampled with a train of narrow rectangular pulses.Quantization. The sampled version of the message signal is then quantized, thereby providing a new representation of the signal that is discrete in both time and amplitude.Encoding. Any plan for representing each of this discrete set of sample values as a group of particular binary numbers is called encoding.Regeneration. The most important feature of PCM systems lies in the ability to control the effects of distortion and noise produced by transmitting a PCM signal through a channel. This capability is accomplished by reconstructing the PCM signal by means of a chain of regenerative repeaters located考 生 信 息 栏系 专业 级 班级 姓名 学号 装 订 线sufficiently close spacing along the transmission route.Decoding. The decoding process involves generating a pulse, the amplitude ofwhich is the linear sum of all the pulses in the code word, with each pulse beingweighted by its place value (20,21,22,…,2R-1) in the code, where R is the number of bitsper sample.Filtering. The final operation in the receiver is to recover the message signal by passing the decoder output through a low-pass filter whose cutoff frequency is equal to the message bandwidth W. Questions for text: 1. What is “PCM” short for? 2. What are the basic operations performed in the transmitter of PCM? 3. What are the basic operations performed in the receiver of PCM? 七、将下列英文翻译成中文 （本题共12小题，每题3分，共36分） 1. We shall define voltage “across” an element as the work done in moving a unit charge (+1C) through the element from one terminal to the other. 2. The circuit designers are not generally interested in the internal components of an integrated circuit, but only in the performance of the unit as a whole. 3. A computer consists of an input/output (I/O) device, memory, a control section, and an arithmetic and logic unit (ALU), which is the computational element. 4. Because of ever more powerful computer systems and the experience of creative programmers, multimedia is truly changing the way people are using computers. 5. When a call between a mobile subscriber and an ordinary subscriber has been set up, the speech is transmitted on the radio path between the mobile station and a voice channel unit of the base station situated close to the mobile station. 6. At today’s level of development, the IC might comprise more than ten thousand separate electronic elements including elements of many different functions, such as diodes, transistors, capacitors and resistors. 7. Just as in the decimal system, every time we shift a symbol one place to the left, we multiply its value by the base 2. 8. Unlike many other threats, a computer virus can spread from program to program and from system to system, without direct human intervention(介入). 9. The fiber optic systems do not use a conventional power source and can be more easily used in hazardous(危险的)areas.10.A multimeter is a general-purpose meter capable of measuring DC and AC voltage, current,resistance, and in some cases, decibels(分贝).11.This is accomplished by using a process known as demodulation, which is the reverse of themodulation process.12.Once the message is entirely received, the message processor examines its header, and accordinglydecides on the next outgoing channel on which to transmit it.八、将下列中文翻译成英文（本题共2小题，每题2分，共4分）1.网络的优势在于它能够方便快捷地传递消息。
四川大学电子信息专业英语期末试题
四川大学电子信息专业英语期末试题一、听力第一节（共5小题，每小题1分）听下面5段对话。
每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1、Who is the man talking about now?A.His girlfriend.B.His sister.C.His mother.2、What are they talking about?A.A traffic accident.B.A fire.C.A crime.3、Where does the conversation most probably take place?A.At a bookshop.B.At a kitchen.C.At a bank.4、Who was injured?A.George.B.Georges wife.C.Georges wifes father.5、What do we learn from the conversation?A.Tony could not continue the experiment.B.Tony finished the experiment last night.C.Tony will go on with his experiment.第二节（共15小题，每小题1分）听下面5段对话或独白。
每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料，回答第6至7题。
6、Where does this conversation most likely take place?A.In the street.B.At the womans home.C.Over the phone.7、What is the woman going to do tonight?A.Help her sister with English.B.Meet her friend at the station.C.Go to an exhibition with her parents.听第7段材料，回答第8至10题。
电大英语B网考题库及答案 自己整理1111
1、How much is this necklace? 这个项链多少钱a. it’s very nice它非常好B. It’s a birthday present from my parents. 他是我父母给我的生日礼物C. It costs fifty pounds. 它花了五十英镑D. Iit’s a bargain. 这是一个很便宜的价格2、We are planning an outing ________ /sure 我们正在计划一个郊______ /当然A. where are you going? 你去哪里B. When will you leave? 你什么时候离开C. How is everything? 近况如何D. Do you want to join us? 要加入我们吗3、How’s your family? 你的家人怎么样A.hanks all the same 感谢B. Thanks for calling 感谢你的来电C. Not too bad 还不错D.Don’t mention it 别放在心上4、sorry for having kept you waiting for so long .my car broke down对不起,让您久等了这么长时间。
我的车抛锚了A.that’s all right 没关系B.I don’t care 无所谓C.I can’t bear it any more 我不能忍受了D..it’s my pleasure 这是我的荣幸5、_______ --- how many days do you want the car? 你要用几天车A.what for? 什么原因B.Is the car good? 汽车好吗？C.I’d like to rent a car,please. 我想租一辆汽车D.L’d like to book a ticket 我想订一张门票阅读理解 1My aunt Edith was a widow (寡妇) of 50, working as a secr etary, when doctors discovered what was thought to be a very se rious heart disease. 我的伊迪丝阿姨是个寡妇(寡妇)的工作作为一名秘书,当医生发现了被认为是一个非常严重的心脏病Aunt Edith doesn't accept defeat (击败) easily. She began stu dying medical reports in the library and found an article in a mag azine about a well-known heart surgeon (外科医生), Dr. Michael D eBakey, of Houston, Texas. He had saved the life of someone with the same disease. The articlesaid Dr. DeBakey's fees were very hi gh; Aunt Edith couldn't possibly pay them. But could he tell her o f someone whose fee she could pay?伊迪丝阿姨不接受失败(击败)。
电大英语B网考题库及答案
Test 1第一部分：交际用语(共10小题；每小题1分，满分10分）此部分共有10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四个选项中选出可以填入空白处的最佳选项，并用铅笔将答案题卡上的相应字母涂黑.示例［A］［B] ［C］[D]1。
—How are you, Bob?—___B____ Ted。
A. How are you？B。
I’m fine。
Thank you。
C. How do you do？ D. Nice to meet you.2. —Thanks for your help。
—___A___A。
My pleasure。
B。
Never mind. C。
Quite right. D。
Don't thank me。
3. —Hello, I’m Harry Potter.—Hello, my name is Charles Green，but ___C___.A。
call my Charles B. call me at Charles C。
call me Charles D. call Charles me4. —Paul, __B___?—Oh, that’s my father! And beside him, my mother。
A。
what is the person over there B。
who’s talking over thereC。
what are they doing D. which is that5。
-Hi，Tom, how’s everything with you？—__B___, and how are you？A. Don’t mention itB. Hm，not too badC. ThanksD. Pretty fast6. —That’s a beautiful dress you have on!—__A___A。
电信专业英语期末试卷B及部分答案-推荐下载
20 07 －20 08 学年 第 1 学期课程名称专业英语试卷卷别A □B√ 专业 级 班级考试方式闭卷 √开卷 □本试卷共 八 大题( 6 页)，满分100分，考试时间120分钟。
请在答题纸上作答，在试卷上作答无效。
考生 信 息 栏系专业级 班级 姓名 学号装 订 线一、根据英文单词或词组，写出中文意思（本题共15小题，每题1分，共15分）1.insulator绝缘子2.conductor 导体3.pulse 脉冲4.sensor 传感器5.manual 手册6.modulate 调制7.nucleus 核8.oscilloscope 示波器9.hardware硬件10.multimedia 多媒体11.terminal controllers终端控制器12.downlink frequency spectrum 下行频谱13.wireless telephone无线电话14.power cord电源线15.forward bias正向偏压考 生信息栏系专业级 班级姓名学号装订线四、选择适当的词或词组填空 （本题共5空，每空1分，共5分）1._______ (In, On) this case, it is possible to determine the amplitude of the voltage.2.The flow of electrons _______ (is made of, makes up) electric current.3.The distortion is caused by the channel _______ (perfection, imperfection).4.ATM dated from the beginning of the 1980s, at the time, people______ (weretrying, are trying) to find the most suitable technique for _______ (to switch, switching) high bit rate channel ate more than 100 Mbit/s..五、选择适当的词填空 （本题共5小题，每题1分，共5分）1.“Input A and input B equals output C” the statement can be expressed by the equation_______. A. AB=C B. A+B=C C. =C AB 2.Some types of information cannot _______effectively without using sound. A. conveyB. be conveyedC. conveyed3.The speech _____ from the MSC on the new voice line connection via the other base station. A. transmitsB. will transmitC. will be transmitted 4.______high frequencies the loads may be inductive(感应). A. At B. OnC. From5.Each channel unit in the BS is equipped _____ radio transmitter, radio receiver, andcontrol unit. A. inB. withC. by六、阅读理解 （本题共5小题，每题3分，共15分）(1) Optical Fiber CommunicationThe optical commutations system is essentially based on the use of optical fibers.Fundamental optical communication system construction is shown as Fig.18. Optical fiber cable functions as a transmission medium in the optical communications system. A light source converting electrical signals to optical signals (E/O converting) is set in the transmitter side. An optical detector reconverting transmitted optical signals to electrical signals (O/E converter) is set in the receiver side. Thus, the light source and detector element, as well as optical fiber are functionally important devices in the optical communications system.A semiconductor light source emits optical power when passing an electrical current through a junction. This junction is formed inside the semiconductor element. Therefore, optical output can be easily modulated by adjusting the electric current according to signals to be transmitted. The semiconductor detector absorbs optical power, exciting electrons in the detector. This process results in optical signal conversion to electrical signal current.The use of optical fibers presents many advantages, such as: less loss, light weight, wide band, flexibility, etc.●Optical fiber loss is lower than PEF (Polyethylene foam ) or coaxial cable, and millimeter waveguide. Low loss values of less than 1 dB/km are attained in the 1.0 to 1.7um wavelength region, excluding the 1.4um wavelength.●Optical cables are lighter than other cables, increasing installation simplicity and decreasing costs.●Optical fiber transmission capacity is larger than any other cable. Since transmission capacity varies from a small to a large number of channels, optical fiber system design is flexible. It is applicable to virtually all fields currently using conventional communications systems.Silica, the main material used in optical fibers is not an electrical conduction. Thus, risk of electromagnetic induction, wave interference, and voltage difference between grounding points does not exist. This advantage enables expansion of cable applications.Questions for text:1.What is the optical cables used as in the optical communication system?2.Tell some advantages using optical communication system.(2) Charge, Current and VoltageAs we know, matter is made up of atoms, which are composed of a number of fundamental particles. The most important of these particles are protons and neutrons found in the nucleus of the atom and electrons moving in orbit about the nucleus of the atom. Normally the atom is electrically neutral, the negative charge of the electrons balancing the positive charge of the protons. Particles may become negatively charged by gaining electrons from other particles.As an example, we may produce a negative charge on a balloon by rubbing it against our hair. The balloon will then stick to a wall or the ceiling, which are uncharged. Relative to the negatively charged balloon the neutral wall and ceiling are oppositely charged. We now define the coulomb (C) by stating that the charge of an electron is a negative one of 1.60218×10-19 coulombs. Putting it another way, a coulomb is the charge of about 6.24×1018 electrons. The symbol for charge will be taken as Q or q.The primary purpose of an electric circuit is to move or transfer charges along specified paths. This motion of charges constitutes an electric current, denoted by the letters i or I, taken from the French word考生信息栏系专业级 班级姓名学号装订线“intensite”. Finally, current is the time rate of change of charge, given by i=dq/dt. The basic unit of current is the ampere (A). An ampere is 1 coulomb per second.Charges (free elections) in a conductor may move in a random manner. However, if we want some concerted motion on their part, we must apply a so-called electromotive force (EMF).Thus work is done on the charges. We shall define voltage “across” an element as the work done in moving a unit charge (+1C) through the element from one terminal to the other. The unit of voltage, or potential difference, as it is sometimescalled, is the volt (V).Questions for text:1. What fundamental particles is an atom composed of?2. Which letter is usually used to denote the charge symbol?3. What is the basic unit of voltage?七、将下列英文翻译成中文 （本题共12小题，每题3分，共36分）1.The primary purpose of an electric circuit is to move or transfer charges along specified paths.2.The invention of IC is a great revolution in the electronic industry.3.The three basic types of digital logic gates are the AND gate, the OR gate, and the NOT gate.4.The CPU must be able to fetch instructions from memory, decode their binary contents, execute them. 5.When the initialization routine has finished, click on OK and the PC will restart.6.The load converts these current changes into voltage changes which form the alternating output voltage u o .7.Although the term “network” has many definitions, most people would agree that networks are collections of two or more connected computers.8.In practice, a low-pass anti-aliasing filter(低通抗混叠滤波器) is used at the front end of the sampler to exclude frequencies greater than W before sampling.9.A light signal generated by a light-emitting diode(发光二极管) or laser is sent through the fiber.10.But by using MP3, a 600M bytes music CD can be shrunk to 50M bytes or less. 11.The purpose of a communication system is to transmit information bearing signalsthrough a communication channel.12.This transmission technique is also referred to as the store-and-forward transmission technique.八、将下列中文翻译成英文（本题共2小题，每题2分，共4分）1.键盘是最常用的输入设备。
电信专业英语期末试卷B及部分谜底
signals. (d) a computer which is located on a network and provides services to other nodes connected to the network. (e) a network that provides communications within specific buildings or facilities.
试卷 A □ 卷别 B √
考试 闭卷 √ 方式 开卷 □
对全部高中资料试卷电气设备，在安装过程中以及安装结束后进行高中资料试卷调整试验；通电检查所有设备高中资料电试力卷保相护互装作置用调与试相技互术关，通系电1，力过根保管据护线0生高不产中仅工资22艺料22高试可中卷以资配解料置决试技吊卷术顶要是层求指配，机置对组不电在规气进范设行高备继中进电资行保料空护试载高卷与中问带资题负料22荷试，下卷而高总且中体可资配保料置障试时23卷，23调需各控要类试在管验最路；大习对限题设度到备内位进来。行确在调保管整机路使组敷其高设在中过正资程常料1工试中况卷，下安要与全加过，强度并看2工且55作尽22下可2都能护1可地关以缩于正小管常故路工障高作高中；中资对资料于料试继试卷电卷连保破接护坏管进范口行围处整，理核或高对者中定对资值某料，些试审异卷核常弯与高扁校中度对资固图料定纸试盒，卷位编工置写况.复进保杂行护设自层备动防与处腐装理跨置，接高尤地中其线资要弯料避曲试免半卷错径调误标试高方中等案资，，料要编5试求写、卷技重电保术要气护交设设装底备备4置。高调、动管中试电作线资高气，敷料中课并3设试资件且、技卷料中拒管术试试调绝路中验卷试动敷包方技作设含案术，技线以来术槽及避、系免管统不架启必等动要多方高项案中方；资式对料，整试为套卷解启突决动然高过停中程机语中。文高因电中此气资，课料电件试力中卷高管电中壁气资薄设料、备试接进卷口行保不调护严试装等工置问作调题并试，且技合进术理行，利过要用关求管运电线行力敷高保设中护技资装术料置。试做线卷到缆技准敷术确设指灵原导活则。。：对对在于于分调差线试动盒过保处程护，中装当高置不中高同资中电料资压试料回卷试路技卷交术调叉问试时题技，，术应作是采为指用调发金试电属人机隔员一板，变进需压行要器隔在组开事在处前发理掌生；握内同图部一纸故线资障槽料时内、，设需强备要电制进回造行路厂外须家部同出电时具源切高高断中中习资资题料料电试试源卷卷，试切线验除缆报从敷告而设与采完相用毕关高，技中要术资进资料行料试检，卷查并主和且要检了保测解护处现装理场置。设。备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况，然后根据规范与规程规定，制定设备调试高中资料试卷方案。
电大网考英语B级选择答案
,Tom, how’s everything with you你好，汤姆，近来都好吗-_________, and how are you 还不错，你呢A Don’t mention itB Hm, not too badC ThanksD Pretty fastByou go to the concert with us this evening 今晚你能和我们一起去听音乐会吗-_________. 我很高兴去，但今晚我很忙。
A No, I already have plansB I’d love to,but I’m busy tonightC No, I really don’t like being with youD I’m ill,so I shouldn’t go out, I’m afraid I have to be leaving now.玛琳，我恐怕现在不得不走了。
-_________噢，那么早A That sounds wonderful.B Oh, so earlyC Not at all.D Good luck!43. Hi, welcome back! Had a nice trip 欢迎回来，旅行还不错吧—____________ 噢，太棒了！每天都有新鲜的空气和温暖的阳光。
A. Oh, fantastic! Fresh air, and sunshine every day.B. Come on, I’ve got lots of fun.C. By the way, I don’t like Saturdays.D. Well, I’ll look forward to your phone call.44. —Excuse me, how much is the jacket 请问，这件夹克衫多少钱—It’s 499 Yuan. ____________. 499元。
电大英语期末考试参考答案
6. I’m deputy manager. I (work for) an IT company.7. –What is your job --I’m (an) accountant.8. Who is that man over there? Do you know (his) name?9. I usually go to the office (by) train.10. (How much) wine do you need for the party?11. You have more apples than (we) do. But (ours) are better than yours.12. How do I (get to) the gym?13. He can (speak) good English.14. Does David (like flying)?15. The business Banking Department is on (the) second floor.16. The shop (closed) at six every day.17. You can paint the walls and (put up) posters. You can do what you want.18. The coat is (much more expensive) than that one.19. Jack (never comes) late because he is a good student.20. –I don’t get up late on Sundays.-- (Neither) do I.21. – I have got a pain in my chest.-- You (should) see the doctor.22. Sally’s parents (are going to) come and stay with her soon.23. – (How long) will the meal take?-- It’ll take two hours, I think.24. It often (snows) in winter in the north of China.25. I don’t want (any) milk in my coffee.6. The Business Banking Department is on (the) second floor.7. (Her) name is Jane. (She) is from the USA.8. Have you got (any) Iychees?9. Mr Green is now (on) a holiday.10. I’d like to (invite) you to a party this Saturday.11. How many (oranges) would you like to buy?12. Hurry up. We don’t have (enough) time.13. – (What) time do you have lunch?-- I usually have lunch at 12.14. I’m a deputy manager. I work (for) an IT company.15. This radio is (more expensive) than that one.16. – The chair is not comfortable enough.-- Yes, I agree. It is (too uncomfortable).17. (Is there) a coffee machine in the room?18. I have two brothers. One is a driver, (the other) is a policeman.19. – (How long) will the meal take?-- It’ll take two hours, I think.20. Mark is responsible (for) the international market.21. – How often (should I) take the medicine?-- You should take it three times a day.22. It (is raining) heavily here at this moment.23. How do I (get to) the gym?24. My aunt (enjoys cooking) for her friends at home. 25. –I haven’t got a car.-- (Neither have I).交际用语1、(B) The shower isn’t working. —I’ll call the plumber.2、(B) What do you do? —I am a policeman.3、(B) What would you like. —An orange juice, please.4、（A）What is she doing right. Now —She is talking to Mary.5、（C）Hello. I’m David Manning. Nice to me you.—Nice to meet you, too. I’m Xiaoyan.6、(C) Hello. I’m Xiaoyan.Nice to meet you.----Nice to meet you too. I’m David Manning.7、(C)Excuse me, where is the nearest bank, please?----It’s next to the newsagent.8、(A)Do you have any family?--Yes, I do. My mother and my father live in Oxford.9、( B )How much is the rent of the flat? It is 450 pounds a month.10、（C）What does her boyfriend look like?-----He is quite tall with fair curly hair.11、（A）What’s the matter with you ?I’ve gor a bad cough.12、（C）Could you ring them up please ? I’m sometimes quite nervous on thephone. Yes, of course . I will phone them for you.13、( A )How about seeting a film this evening? Yes , that’s a good idea.14、（C）What time does the train leave？At half past five.15、( B )What do your parents do? My father is a manager. My mother is a nurse.1.How do I get to the airport, please?—You can take the tube.2.What does your English teacher look like?—she’s tall and has long, wavy hair.3.What’s the weather like in this area?—it’s rainy.4.Would you like to go with us?—I’d love to.5.Excuse me, where is the nearest bank, please?—It’s next to the newsagent.6.Excuse me, how do I get to the gym , please?–You take the number 866 bus from the supermarket.7.What’s the matter with you?–I’ve got a bad cough.8.Why don’t we write the invitations now .–That’s a good idea.9.What time does the train leave?–At half past five.10.How long does it take from Beijing to London by plane?–It’s takes about 7 hours.11. What do your parents do?My father is a manager. My mother is a murse.12. Can I help you?—Yes, I’d like some apples, please.13. Hello, Linda, how are you?Very well, thank you . Are you good.14. What does her boyfriend look like?—He is quite tall with fair curly hair.15.Could you ring them up please? I’m sometimes quite nervous on the phone.—Yes, of course. I will phone them for you.词汇与结构1. He works at a school.2. I usually get up at 7 o’clock in the morning.3. The Business Banking Department is on the second floor.4. David is the only accountant in my father’s company.5. Mr Green is now on a holiday.6. Have you got any family?7. Mark is responsible for the international market.8. Her name is Clair.9. I am planning a new marketing campaign at the moment.10. Polly enjoys playing the guitar in a band in her free time.11. There are three plants in the office.12. He works in the Finance Department of a large company.13. What does“nr” mean?14. I sometimes go to the pub on Friday.15. These people are my friends. Those people are my husband’s friends.16. He lives in New York City. His parents live in Dallas.17. My husband doesn’t like shopping. But I like it very much.18. Where do your parents live?19. I’m a university student.20、How much does the flat cost a month?21. What is Singapore like?—it’s small and well organised.22. How many oranges would you like to buy23. I don’t need any coffee, thanks.24. How much rice do you want to buy?25. I don’t need to buy any wine26. It is raining heavily here at this moment.27. I haven’t got a car. — Neither have I.28. He can speak good English.29. What about Wednesday evening?Sorry, I’m too busy then.30. I’m interested in cooking.31. It often snows in winter in the north of China.32. Would you like to come to dinner tonight?33. I don’t need any mineral water, but I’d like some tea, thanks.34. I am not keen on sports.35. You can paint the walls and put up posters. You can do what you want.36. I prefer watching TV. So do I.37. How much dose it cost by bus? 38. The area is too dirty.---- Yes, I agree. It’s not clean enough.39. He goes to work on foot but comes back home by taxi.40. How about taking a taxi?41.Are there any classes in the evenings?42.Which is longer , the Yangtze River or the Yellow River?43.I’m making a list of things to buy.44.Rose is experienced at training.45.She is making herself a cup of coffee,46.When are you leaving London for Paris?47.I think there will be50 people at tomorrow’s party.48.Carlos has to serve the drinks and take the orders.49.Hurry up. We don’t have enough time.50.I’ll give the man the book.51.I am not feeling very well. I need to see the doctor.52.How are you feeling?—I am feeling really ill.53.Was Chris worried about the presentation last week?54.I don’t like London. It is different from Beijing.55.Why don’t we prepare everything today?56.I have an English class three times a week.57.Chris usually go to the gym at the weekend.58.You should go to bed and sleep.59.Which of these two books do you prefer?60.I’m bad at spelling. But Jane is worse than me.二.词汇与结构I’m a deputy manager. I work about an IT company.What is your job?—I’m an accountant.Who is that man over there? Do you know his name?This is his bock. Could you give it to him?How much yine do you need for the party?Would you like a drink? Wine? Beer?How do I get to the gym?I’d like to invite you to a party this Saturday.I like documentaries on TV. So do I.The Business Banking Department is on the second floor. The shop closes at six every day.He is a good student. He always comes early.What’s wrong with your clock?Pandas and monkeys are not \. dangerous animals.Is your father reading a book or watching TV?We often have our supper at home.What was the meeting like? It was very exciting.I’m interested in cooking.There are four children in the picture.This watch is as expensive as that one.翻译补充Are you free(你有空吗) on Saturday?Her husband works in insurance.(在保险行业工作)My friend works in computetrs(在计算机行业工作)—I’m afraid not. I have to go to the English classes on SaturdayWhat does he look like? (他长什么样儿)—He’s very tall with blue eyes and short beard.I’m not feeling well. I think I’ve got a cold.(我得了感冒)。
电大英语B级考试——对话答案
Afternoon, sir. Where to ？ A 。
Please get me to the airport Ami ， I'd like this report typed today 。
A. It ’ll be really in the afternoon, sirAmi ，I want this report typed today 。
I'll be ready in the afternoon ，sir 。
Are there any good shows on TV tonight ？ B 。
Titanic is the movie channelAre you feeling better today, Mrs 。
Silver ？ D 。
Yes, thanks doctor 。
But I still fell dizzyAre you getting a new flat this year ？ B. You must be joking. I can ’t afford to pay my bills, let alone buy a new flat Are you on holiday here? C. No, we aren ’t 。
We live here Are you sure about that? （D)D 。
Oh ， yes. I'm absolutely positiveCan I help you to get it down ？ （C) Thanks. It's so nice of youCan I take your oder now ？Just a moment.Two friends are coming.Can you go to the concert with us this evening ？ B. I ’d love to ， but I ’m busy tonightCan you help me clear up the mess ？ D. No problemCan you tell me where I can park the car ？ C 。
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12. downlink frequency spectrum 下行频谱
13. wireless telephone
14. power cord
15. forward bias 正向偏压
电源线
无线电话
第1页共6页
对全部高中资料试卷电气设备，在安装过程中以及安装结束后进行高中资料试卷调整试验；通电检查所有设备高中资料电试力卷保相护互装作置用调与试相技互术关，通系电1，力过根保管据护线生高0不产中仅工资2艺料22高试2可中卷以资配解料置决试技吊卷术顶要是层求指配，机置对组不电在规气进范设行高备继中进电资行保料空护试载高卷与中问带资题负料2荷试2，下卷而高总且中体可资配保料置障试时2卷，32调需3各控要类试在管验最路；大习对限题设度到备内位进来。行确在调保管整机路使组敷其高设在中过正资程常料1工试中况卷，下安要与全加过，强度并看工且25作尽52下可22都能护可地1关以缩于正小管常故路工障高作高中；中资对资料于料试继试卷电卷连保破接护坏管进范口行围处整，理核或高对者中定对资值某料，些试审异卷核常弯与高扁校中度对资固图料定纸试盒，卷位编工置写况.复进保杂行护设自层备动防与处腐装理跨置，接高尤地中其线资要弯料避曲试免半卷错径调误标试高方中等案资，，料要编试求5写、卷技重电保术要气护交设设装底备备置。4高调、动管中试电作线资高气，敷料中课并设3试资件且、技卷料中拒管术试试调绝路中验卷试动敷包方技作设含案术，技线以来术槽及避、系免管统不架启必等动要多方高项案中方；资式对料，整试为套卷解启突决动然高过停中程机语中。文高因电中此气资，课料电件试力中卷高管电中壁气资薄设料、备试接进卷口行保不调护严试装等工置问作调题并试，且技合进术理行，利过要用关求管运电线行力敷高保设中护技资装术料置。试做线卷到缆技准敷术确设指灵原导活则。。：对对在于于分调差线试动盒过保处程护，中装当高置不中高同资中电料资压试料回卷试路技卷交术调叉问试时题技，，术应作是采为指用调发金试电属人机隔员一板，变进需压行要器隔在组开事在处前发理掌生；握内同图部一纸故线资障槽料时内、，设需强备要电制进回造行路厂外须家部同出电时具源切高高断中中习资资题料料电试试源卷卷，试切线验除缆报从敷告而设与采完相用毕关高，技中要术资进资料行料试检，卷查并主和且要检了保测解护处现装理场置。设。备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况，然后根据规范与规程规定，制定设备调试高中资料试卷方案。
二、根据英文缩写，写出英文完整形式及中文意思（本题共 5 小题，每题 2 分，共 10 分）
1. BS 2. LAN 3. CPU 4. IC 5. RF
基站 区域网路
中央处理器 集成电路 射频
三、用连线使 A 栏与 B 栏匹配 （本题共 2 大题，每题 5 分，共 10 分）
1. Column A
(1) receiver (2) information source
(3) noise (4) transmitter (5) channel
考
生
信
息
栏
系
专业
级 班级
姓名
学号
装
订
线
课程名称
20 07 －20 08 学年 第 1 学期
专业英语
专业 级 班级
本试卷共 八 大题( 6 页)，满分 100 分，考试时间 120 分钟。 请在答题纸上作答，在试卷上作答无效。
一、根据英文单词或词组，写出中文意思（本题共 15 小题，每题 1 分，共 15 分）
1. insulator 绝缘子
2. conductor 导体
3. pulse 脉冲
4. sensor 传感器
5. manual 手册
6. modulate 调制
7. nucleus 核
8. oscilloscope 示波器
9. hardware 硬件
10. multimedia 多媒体
11. terminal controllers 终端闭卷 √ 方式 开卷 □
对全部高中资料试卷电气设备，在安装过程中以及安装结束后进行高中资料试卷调整试验；通电检查所有设备高中资料电试力卷保相护互装作置用调与试相技互术关，通系电1，力过根保管据护线0生高不产中仅工资22艺料22高试可中卷以资配解料置决试技吊卷术顶要是层求指配，机置对组不电在规气进范设行高备继中进电资行保料空护试载高卷与中问带资题负料22荷试，下卷而高总且中体可资配保料置障试时23卷，23调需各控要类试在管验最路；大习对限题设度到备内位进来。行确在调保管整机路使组敷其高设在中过正资程常料1工试中况卷，下安要与全加过，强度并看2工且55作尽22下可2都能护1可地关以缩于正小管常故路工障高作高中；中资对资料于料试继试卷电卷连保破接护坏管进范口行围处整，理核或高对者中定对资值某料，些试审异卷核常弯与高扁校中度对资固图料定纸试盒，卷位编工置写况.复进保杂行护设自层备动防与处腐装理跨置，接高尤地中其线资要弯料避曲试免半卷错径调误标试高方中等案资，，料要编5试求写、卷技重电保术要气护交设设装底备备4置。高调、动管中试电作线资高气，敷料中课并3设试资件且、技卷料中拒管术试试调绝路中验卷试动敷包方技作设含案术，技线以来术槽及避、系免管统不架启必等动要多方高项案中方；资式对料，整试为套卷解启突决动然高过停中程机语中。文高因电中此气资，课料电件试力中卷高管电中壁气资薄设料、备试接进卷口行保不调护严试装等工置问作调题并试，且技合进术理行，利过要用关求管运电线行力敷高保设中护技资装术料置。试做线卷到缆技准敷术确设指灵原导活则。。：对对在于于分调差线试动盒过保处程护，中装当高置不中高同资中电料资压试料回卷试路技卷交术调叉问试时题技，，术应作是采为指用调发金试电属人机隔员一板，变进需压行要器隔在组开事在处前发理掌生；握内同图部一纸故线资障槽料时内、，设需强备要电制进回造行路厂外须家部同出电时具源切高高断中中习资资题料料电试试源卷卷，试切线验除缆报从敷告而设与采完相用毕关高，技中要术资进资料行料试检，卷查并主和且要检了保测解护处现装理场置。设。备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况，然后根据规范与规程规定，制定设备调试高中资料试卷方案。