电子与通信专业英语期末试题
最新信息与通信工程专业英语-试卷及答案
If we think of light as an electromagnetic wave, the history of wireless communication can be traced back to the origin of the universe. Since ancient humans began to transmit information by shouting from top to top, they began to hope for convenient and effective communication through wireless.
The addition of input weights and thresholds makes neurons more flexible and powerful. Neurons have the ability to adapt to specific situations by changing weights or thresholds.
(2)传导率conductivity
(3)模式识别pattern recognition
(4)种类category
(5)数字技术digital techniques
(6)语音识别speech recognition
(7)磁共振magnetic resonance
(8)虚拟现实virtual reality
(3)Bandwidth频带宽度
(4)Conductor length导体长度
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。
(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)。
《电子信息专业英语》课程期末考试卷(A卷)
《电⼦信息专业英语》课程期末考试卷(A卷)1 共2页第1页XXXX 职业技术学院20 19⾄2020学年第⼆学期考核试卷课程名称__电⼦信息专业英语___ 卷号 _A__ 课程考核类别:□考试□考查考核形式开卷笔试使⽤专业班级 XX 移动通信技术班出卷⼈ __XXX_______ 审卷⼈__XXX___ 考试时间__90___分钟⼀、Judge true and false according to technical knowledge.(每⼩题1分,共10分)1. Multimedia means many forms of communication such as audio and video.( )2. An embedded controller may lack any human-readable interface devicesat all. ( )3. There is no movement in the animation. ( )4. The microcontroller units use the embedded design and have higherintegration. ( )5. Before applying DSP, a digital signal must be converted into analog form.( )6. To avoid self-heating, the current through the RTD must be keptsufficiently low and constant. ( )7. The roles of the encoder and the demodulator are almost the same in thatboth prepare the signal appearing across its output terminals. ( )8. The Third Generation is the mobile multimedia based on CDMA technology.( )9. Insert an ammeter in the circuit to measure current. ( )10. View shortcut menus by left-clicking with the mouse. ( )⼆、Translate the following phrases and expressions.(每⼩题2分,共30分)(1)document (2)menu (3)version(4)integration (5)sideband (6)interference(7)transducer (8)detector (9)protocol(10)static graphic images (11) serial ports (12)read-only memory (13)an envelope detector(14)power amplifier (15)communication system三、Match Column A with Column B.(每⼩题2分,共10分)Column A Column B.(1)toolbar a. a device measure the temperature of environment base on the variation of resistance (2)DSP b. the medium used to transmit thesignal from the transmitter to the receiver (3)temperature sensing device c. common used computer commands chosen from the View/ menu, whichare displayed in tool buttons(4)amplification d. the processing of signals bydigital means(5)channel e. to compensate for the loss ofsignal power四、Choose the best answer.(每⼩题2分,共20分)1. The 555 integrated circuit is used for .A. timingB. filterC. amplifierD. instrument2. GPS determines by computing the difference between the time asignal is sent and the time it is received.A. distanceB. timeC. locationD. length3. Wireless communications means transmission of information by .A. optical fiberB. cableC. radioD. fixed telephone4. Resistance-Temperature Detector is a device which be used tomeasure .A. temperatureB. resistanceC.voltageD. current5. Digital television receiver covert the ananlog, or , electronictelevision signals received by an antenna into an electronic digital code.A. separateB. continuousC. slenderD.disperse6. The phrase ”volatile memory ” can be replace by .A. ROMB.RAMC. EEPROMD. EPROM7. A digital signal consits of a stresm of numbers, usually(but notnecessary) in form.专业班级_____________ 学号______________ 姓名________________装订线A. binaryB. decimalC. analogD. octal8. The radio receiver has the task of the imcoming modulated signal.A. amplifyingB. transmittingC. modulatingD. demodulating9. The chooses the best form for the signal in order to optimize its detection at the ouput.A. encoderB. decoderC. modulatorD. demodulator10. The value of one resitance is 2kΩ, another is 4kΩ, these two resistor are in parallel with eachother and in series with a battery of 12V. The current following through the resistor which resistance is 4kΩis .A. 9mAB. 6mAC. 3mAD. 2mA五、Translate the following sentences into Chinese.(每⼩题6分,共30分)1. Multimedia technology combines audio and visual material to enhance communication and enrich multimedia presentation.2. In addition to all arithmetic and logic elements of a general purpose microprocessor, the microcontroller usually also integrates additional elements such as read-only and read-write memory, and input/output interfaces.3. In a broadcasting system, irrespective of whether it is based on amplitude modulation or frequency modulation, the receiver not only has the task of demodulating the incoming modulated signal, but it is also required to perform some other system functions such as carrier-frequency tuning, filtering, amplification.4. Television is a system of sending and receiving pictures and sound by means of electronic signals transmitted through wires and optical fibers or by electromagnetic radiation.5. Multimedia services add high speed data transfer to mobile devices, allowing new video, audio and other applications through mobile phones —allowing music and television and the Internet to be accessed through a mobile terminal.1 共2页第1页。
信息与通信工程专业英语-试卷及答案
研究生课程期末考试试卷《信息与通信工程专业英语》学年度第学期学院:专业:信息与通信工程姓名:学号:第一题、通信工程专业英语常用词组翻译。
(每小题1.5分,共30分)1.将下列英文词组翻译为汉语。
(1) Integrated circuit 集成电路(2) Individual electrons 单个电子(3) Bandwidth 频带宽度(4) Conductor length 导体长度(5) Vector 向量(6) Interface 界面(7) Signal frequency 信号频率(8) Voltage 电压(9) Integral form 积分形式(10)Tensor 张量2.将下列汉语词组翻译为英语。
(1)模拟器simulator(2)传导率conductivity(3)模式识别pattern recognition(4)种类category(5)数字技术digital techniques(6)语音识别speech recognition(7)磁共振magnetic resonance(8)虚拟现实virtual reality(9)放大器amplifier(10)信息技术information technology第二题、英文和汉语词组正确搭配。
(每小组1分,共10分)(a)Modulation sidebands 数据信道f(b)Intermediate frequency 中频b(c)Analog system 有监督学习e(d)Feedback network 载波信道j(e)Supervised learning 模拟系统c(f)Data channel 反馈网络d(g)Adaptive learning 数字信号处理h(h)Digital signal processing 调制边带a(i)Negative feedback 自适应学习g(j)Bearer channel 负反馈i第三题、将下面几段文字翻译为汉语。
电子信息专业英语试卷1
电子信息专业英语期末考试试卷(一)(考试时间120分钟,满分100分)一、词汇测试题(共25道题,每小题1分,总计25分)(一).Translate the following words and expressions into Chinese (写出下列词组的汉语意思。
)(共25分,每题1分,总计25分)1. resistor 2. capacitor 3. inductor 4. resistance 5. capacitance 6. inductance . 7.Dielectric8. frequency9.electromotive force (emf )10. Electronics 11. Electricity12. electron 13. Diode14. Transistor 15. Circuit 16. Vacuum 17. semiconductor 18. silicon 19. chip20. microminiaturization 21. Microelectronics 22. integrated circuit 23. Negative 24. Positive 25. Cell(共25题,每题1分,总计25分)1.黑白电视机2.基本原理3.硅晶体管4.电子元件5. 锗晶体管6. 真空二极管7. 信息时代 8. 单片 9.电源 10.负极 11.正极 12.干电池 13.串联 14.并联 15.电压降16.固定电阻 17.电阻值18.电场 19.容抗 20. 对电流的阻力21. 非线性电阻23.一个二端元件24.一个闭合回路 25. 事实上(三)填空题Choose one word from the word list below to fill in the blank in each of the following sentences. Change the form of the word where necessary: (共8道题,每题1分,总计8分)resistors capacitance nonlinear resistance electricity inductor electrical capacitor1. Capacitor’s basic function is to store _____ energy.2. A _____ is a device designed to have capacitance.3. The property of a capacitor to oppose any change in voltage across that capacitor is called ______.4. Resistors used for special applications are ______.5. Ohm is used as a unit of ______.6. Some _____ are made to have a variable resistance.7. The larger is the emf, the more ______ the capacitor stores. 8. Any _____ is made of wire having resistance.(四)单项选择题Choose the one that best completes each of the following statements according to the text: (共12题,每题1分,共12分)1. Electronics is a part of _______.A. electronsB. technologyC. electricityD. science2. The field of electronics includes _____.A. transistorB. electron tubeC. integrated circuitD. All above3. Thomas Edison invented ______ in 1883.A. vacuum tubeB. diodeC. triodeD. lamp4. The first transistors were made from ______.A. siliconB. germaniumC. copperD. gold5. ______ created a new future in electronics.A. Integrated circuitB. SemiconductorC. Electron tubeD. Computer6. Due to the invention of ______, microelectronics was created in 1950s.A. electron tubeB. transistor 7. Power supply, the conductor, the control device and ______ are fourbasic parts of an electric circuit.A. batteryB. wireC. switchD. load8. The energy conversion can take place _______.A. in the circuitB. in a cellC. within the loadD. along the wire9. Electric circuit is a combination of a conductor and of a source of e.m.f.which permits electrons to flow along a ______.A. streamB. wireC. terminalD. pathway10. The electrons move in a fixed way in a _____ direction.A. definiteB. differentC. variousD. appropriate11. The electric current flows from ______ to ______.A. negative , positiveB. positive, negativeC. minus, plusD. A and C12. When the current flows, it is a ______ circuit.A. closedB. openC. combinationD. electric(五)翻译题(共10题,每题2分,总计20分)1. Each lamp filament representing an independent path from the minus main wire to the plus wire.2. Silicon transistors began to replace germanium transistors in the late 1950s, which made possible the next revolutionary step in electronics.3. Electronics began in 1883, when Thomas Edison discovered the vacuum diode as part of his research on materials for a practical electric light. proportional to the current passing through it.5. Such circuits make it possible to combine the different voltage characteristic of a series circuit with the different current characteristic of a parallel circuit within a single network.6. Jack Kilby, an American scientist, made the first single IC in the late 1950s, which laid foundation of microminiaturization and integration.7. Digital computers are essentially machines for recording numbers, operating with numbers and giving the result in numerical forms.8. Integrated circuits are more of a science, than of a technology.9. Bandwidth of transistor amplifiers vary from about 250 MHz in the L band to 1000 MHz in the X band.10. The main device failure mode is secondary breakdown。
电子信息工程专业专业英语考卷
电子信息工程专业《专业英语》课程期末考试试题专业、班级:姓名:学号:共 6 页第 1 页三、根据英文缩写写出中文含义(每题 0.5 分,二十个小题,共 10 分)1). CDMA2). ALU3). DAS4). HLL5). SCR6). I/O7). MIPS8). MMX9). DCS10). HDD11). PLA12). VSWR13). DC14). FDM15). GBW16). TDM17). IP18). DCT19). MRI20). PCM四、将下列句子翻译为中文(每题 2 分,五个小题,共 10 分)1). At present, the state of most semiconductor device technology is such that the device design and process technology must be supplemented by screening and inspection procedures, if ultimate device reliability is to be obtained and controlled.2). The converter is essentially a highly over –sampling 1-bit ADC (the comparator) followed by digital filtering and decimation to realize the processing gain. The effective performance of the converter is greatly enhanced by the addition of circuitry to shape the quantization noise such that, instead of being uniformly spread throughout the 0 to fs/2 band, it is minimized in the band of interest.3). Although the individual integrated circuits might cost as little as 10 cents each, the cost of designing the printed circuit board for such a system and the cost of assembling the board are very significant and this design style is no longer cost-effective.4). Rather than just matching the abilities of the human ear, these systems are designed to exceed the limits of hearing. It's the only way to be sure that the reprod uced music is pristine.5). In the case that the object types in a video sequence belong to known object classes, knowledge-based coding can be employed, which uses a wireframe specially designed to describe the recognized object type. Several approaches have been developed to code human heads using predefined wireframes. Using a predefined wireframe increases coding efficiency because it is adapted to the shape of the object. Sometimes. this technique is also referred to as model based coding.五、将下列句子翻译为相应的英文(每题 3 分,五个小题,共 30 分)1). 在测量应用中,选择合适的探头是获得最佳信号保真度的关键。
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。
电子信息工程专业专业英语考卷
电子信息工程专业《专业英语》课程期末考试试题专业、班级:姓名:学号:共 6 页第 1 页三、根据英文缩写写出中文含义(每题 0.5 分,二十个小题,共 10 分)1). CDMA2). ALU3). DAS4). HLL5). SCR6). I/O7). MIPS8). MMX9). DCS10). HDD11). PLA12). VSWR13). DC14). FDM15). GBW16). TDM17). IP18). DCT19). MRI20). PCM四、将下列句子翻译为中文(每题 2 分,五个小题,共 10 分)1). At present, the state of most semiconductor device technology is such that the device design and process technology must be supplemented by screening and inspection procedures, if ultimate device reliability is to be obtained and controlled.2). The converter is essentially a highly over –sampling 1-bit ADC (the comparator) followed by digital filtering and decimation to realize the processing gain. The effective performance of the converter is greatly enhanced by the addition of circuitry to shape the quantization noise such that, instead of being uniformly spread throughout the 0 to fs/2 band, it is minimized in the band of interest.3). Although the individual integrated circuits might cost as little as 10 cents each, the cost of designing the printed circuit board for such a system and the cost of assembling the board are very significant and this design style is no longer cost-effective.4). Rather than just matching the abilities of the human ear, these systems are designed to exceed the limits of hearing. It's the only way to be sure that the reprod uced music is pristine.5). In the case that the object types in a video sequence belong to known object classes, knowledge-based coding can be employed, which uses a wireframe specially designed to describe the recognized object type. Several approaches have been developed to code human heads using predefined wireframes. Using a predefined wireframe increases coding efficiency because it is adapted to the shape of the object. Sometimes. this technique is also referred to as model based coding.五、将下列句子翻译为相应的英文(每题 3 分,五个小题,共 30 分)1). 在测量应用中,选择合适的探头是获得最佳信号保真度的关键。
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。
电子信息与通信工程专业外语期末考试重点
LSI large-scale integration 大规模集成电路PLC Programmable Logic Controller 可编程逻辑控制器LED light-emitting diodes 发光二极管IC Integrated circuit 集成电路AC Alternate Current 交流DC Direct Current 直流DSP digital signal processing 数字信号处理digital signal processor 数字信号处理器 NFC Near Field Communication 近距离无线通信PCS Personal Communications Service 个人通信服务PDA Personal Digital Assistance 掌上电脑(个人数字助理)PDC Personal Data Cellular 分组数据蜂窝QoS Quality of Service 服务质量RTT Radiation Tracking Transducer 无线电传输技术UWB Ultra Wide Band 超宽带二、翻译公式基本函数公式英语—公式1. a 2-b 2=(a+b)(a-b)a squared minusb squared equals open parenthesis a plus b close parenthesis times open parenthesis a minus b close parenthesis 。
2. 3232)4(x 1x -+x x plus one over the quantity x squared times the quantity x cubed minus four to the two-third power 。
3. ).......21(1lim 2n nn +++∞→ The limit as n approaches infinity of the quantity one over n squared times one plus two plus to plus n.4. {a[b+(c-d )]}one half open brace , a open bracket b plus open parenthesis c minus d close parenthesis close bracket close brace 。
电子信息专业英语试卷1
电子信息专业英语期末考试试卷(一)(考试时间120分钟,满分100分)一、词汇测试题(共25道题,每小题1分,总计25分)(一).Translate the following words and expressions into Chinese (写出下列词组的汉语意思。
)(共25分,每题1分,总计25分)1. resistor 2. capacitor 3. inductor 4. resistance 5. capacitance 6. inductance . 7.Dielectric8. frequency9.electromotive force (emf )10. Electronics 11. Electricity12. electron 13. Diode14. Transistor 15. Circuit 16. Vacuum 17. semiconductor 18. silicon 19. chip20. microminiaturization 21. Microelectronics 22. integrated circuit 23. Negative 24. Positive 25. Cell(共25题,每题1分,总计25分)1.黑白电视机2.基本原理3.硅晶体管4.电子元件5. 锗晶体管6. 真空二极管7. 信息时代 8. 单片 9.电源 10.负极 11.正极 12.干电池 13.串联 14.并联 15.电压降16.固定电阻 17.电阻值18.电场 19.容抗 20. 对电流的阻力21. 非线性电阻23.一个二端元件24.一个闭合回路 25. 事实上(三)填空题Choose one word from the word list below to fill in the blank in each of the following sentences. Change the form of the word where necessary: (共8道题,每题1分,总计8分)resistors capacitance nonlinear resistance electricity inductor electrical capacitor1. Capacitor’s basic function is to store _____ energy.2. A _____ is a device designed to have capacitance.3. The property of a capacitor to oppose any change in voltage across that capacitor is called ______.4. Resistors used for special applications are ______.5. Ohm is used as a unit of ______.6. Some _____ are made to have a variable resistance.7. The larger is the emf, the more ______ the capacitor stores. 8. Any _____ is made of wire having resistance.(四)单项选择题Choose the one that best completes each of the following statements according to the text: (共12题,每题1分,共12分)1. Electronics is a part of _______.A. electronsB. technologyC. electricityD. science2. The field of electronics includes _____.A. transistorB. electron tubeC. integrated circuitD. All above3. Thomas Edison invented ______ in 1883.A. vacuum tubeB. diodeC. triodeD. lamp4. The first transistors were made from ______.A. siliconB. germaniumC. copperD. gold5. ______ created a new future in electronics.A. Integrated circuitB. SemiconductorC. Electron tubeD. Computer6. Due to the invention of ______, microelectronics was created in 1950s.A. electron tubeB. transistor 7. Power supply, the conductor, the control device and ______ are fourbasic parts of an electric circuit.A. batteryB. wireC. switchD. load8. The energy conversion can take place _______.A. in the circuitB. in a cellC. within the loadD. along the wire9. Electric circuit is a combination of a conductor and of a source of e.m.f.which permits electrons to flow along a ______.A. streamB. wireC. terminalD. pathway10. The electrons move in a fixed way in a _____ direction.A. definiteB. differentC. variousD. appropriate11. The electric current flows from ______ to ______.A. negative , positiveB. positive, negativeC. minus, plusD. A and C12. When the current flows, it is a ______ circuit.A. closedB. openC. combinationD. electric(五)翻译题(共10题,每题2分,总计20分)1. Each lamp filament representing an independent path from the minus main wire to the plus wire.2. Silicon transistors began to replace germanium transistors in the late 1950s, which made possible the next revolutionary step in electronics.3. Electronics began in 1883, when Thomas Edison discovered the vacuum diode as part of his research on materials for a practical electric light. proportional to the current passing through it.5. Such circuits make it possible to combine the different voltage characteristic of a series circuit with the different current characteristic of a parallel circuit within a single network.6. Jack Kilby, an American scientist, made the first single IC in the late 1950s, which laid foundation of microminiaturization and integration.7. Digital computers are essentially machines for recording numbers, operating with numbers and giving the result in numerical forms.8. Integrated circuits are more of a science, than of a technology.9. Bandwidth of transistor amplifiers vary from about 250 MHz in the L band to 1000 MHz in the X band.10. The main device failure mode is secondary breakdown。
(完整版)电子信息技术专业英语试题卷
2013~2014学年第一学期1106-1107班《电子信息技术专业英语》试卷(考试时间90分钟)一、单词翻译(20%)1. switch 11. component2. device 12. circuit3. instruction 13. resistor4. junction 14. capacitor5. combination 15. diode6. manufacture 16. transistor7. structure 17. current8. principle 18. voltage9. wafer 19. amplifier 10. analog20. insulator二、词组互译(20%) 1. 广泛应用于 11. electronic circuit 2. 把…. 分成…… 12. variable resistor 3. 打算…… 13. direct currents 4. 根据…… 14. integrated circuit 5. 将…..应用于 15. forward bias 6. 提到、指 16. N-type material 7.由……组成 17. electronic counter 8. 用做…… 18. frequency synthesizer 9. 被称做…… 19. digital instrument 10. 形成 20. operational amplifier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、句子翻译(20%)1. The transistor acts as a switch.2. Diodes conduct electricity in only one direction.3. Digital ICs can be used in computers.4. ICs have a small size and low cost and therefore they are widely used in different fields.5. Substance can be divided into three types: conductors, semiconductors andinsulators.六、段落翻译(15%)An integrated circuit look like nothing more than a tiny chip of metal, perhaps one-half of a centimeter on a side, and not much thicker than a sheet of paper. It is so small that if it fell on the floor, it could be easily swept up with the dust. Although it is very small, it represents the most highly skilled technology at every step of its manufacture. At today’s level of development, it might comprise more than ten thousand separate electronic elements including elements of many different functions, such as diodes, transistors, capacitors and resistors.2013~2014学年第一学期1106-1107班《电子信息技术专业英语》补考答题卷(考试时间90分钟)一、单词翻译(20%)1.__________________________ 11. ________________________2.__________________________ 12._________________________3.__________________________ 13._________________________4. _________________________ 14. _________________________5.__________________________ 15.________________________ 6 ._________________________ 16.________________________ 7 ._________________________ 17.________________________8. _________________________ 18.________________________ 9 ._________________________ 19.________________________ 10._________________________ 20.________________________ 二、词组互译(20%)1.__________________________ 11. ________________________2.__________________________ 12._________________________3.__________________________ 13._________________________4. _________________________ 14. ________________________5.__________________________ 15.________________________ 6 ._________________________ 16.________________________ 7 ._________________________ 17.________________________8. _________________________ 18.________________________ 9 ._________________________ 19.________________________ 10._________________________ 20.________________________三、判断正误,用“T ”或“F ” 表示(10%)1._____2._____3.______4.______5.________(10%)。
通信专业英语考试习题
通信专业英语考试习题通信专业英语考试习题是许多学习通信的学生常常会遇到的挑战。
这些考试题旨在测试学生对通信学科的理解和运用能力。
下面将介绍一些常见的通信专业英语考试习题,希望能对大家备考有所帮助。
一、选择题1. 下面哪个选项是正确的数据通信的定义?A. 使用数字信号而非模拟信号进行信息传输。
B. 使用光纤而非电缆进行信息传输。
C. 使用卫星通信而非微波通信进行信息传输。
正确答案:A2. 通过无线电波进行通信的主要问题是什么?A. 信号的传输距离有限。
B. 频谱资源有限。
C. 安全性问题。
正确答案:B3. 下面哪个选项是正确的带宽定义?A. 数据的传输速率。
B. 可用频谱范围。
C. 数据的传输距离。
正确答案:B4. 频率调制(FM)是通过改变哪个参数来传输信息?A. 频率B. 幅度C. 相位正确答案:A5. 下面哪个选项是正确的对称数字用户线路(DSL)的定义?A. 一种提供高速互联网接入的传输技术。
B. 一种用于长距离电话通信的传输技术。
C. 一种用于数字音视频传输的传输技术。
正确答案:A二、填空题1. OSI模型中,物理层主要负责______________。
答案:将数据转换为适合在通信信道上传输的形式。
2. ___________________是一种广泛用于局域网连接的传输媒介。
答案:双绞线(Twisted Pair)。
三、简答题1. 请简要解释一下分组交换和电路交换的区别和优缺点。
答案:分组交换和电路交换是两种不同的数据传输方式。
电路交换在通信双方建立连接后,会一直占用通信资源直到通信结束;而分组交换将数据划分为小的数据包(分组)进行传输,传输过程中不需要提前建立连接。
电路交换的优点是传输稳定,可以保证实时性,适用于实时语音和视频通信;缺点是资源占用高且不灵活。
分组交换的优点是资源利用率高,适合不同时刻多个用户共享资源;缺点是传输延迟较大,对实时性要求较高的应用不太适用。
2. 请简要解释一下TCP/IP协议族中的IP协议和TCP协议的作用。
通信工程专业英语考试试卷
XXXXXX大学2015-2016学年第一学期《English for Telecommunication Engineering》期末考试试卷(A卷)考核形式(开卷)第一题、通信工程专业英语常用词组翻译。
(每小题1.5分,共30分)1.将下列英文词组翻译为汉语。
(1)Mobile telephone 移动电话(2)retrieval 检索(3)bandwidth 频带宽度(4)second moment 二阶矩(5)hypermedia 超媒体(6)interface 界面(7)d iscrete media离散介质(8)(8)database 数据库(9)e-commerce 电子商务(10)communication 通信2.将下列汉语词组翻译为英语。
(1)模拟器simulator(2)铸造标记语言Foundry Markup Language(3)投资报酬率return-on-investment(4)纯文本plain text(5)连续介质continuous media(6)语音识别speech recognition(7)万维网World Wide Web(8)虚拟现实virtual reality(9)蓝牙技术bluetooth technology(10)信息技术information technology第二题、英文和汉语词组正确搭配。
(每小组1分,共10分)(a)S tandard Generalized Markup Language 数据信道 f (b)I ntegrated Services Digital Network 网络公司e (c)analog system 全球电子商务联盟g (d)T erminal Adapter 载波信道j (e)d ot-com 模拟系统c (f)data channel 终端适配器 d (g)t he Global E-commerce Consortium 端到端数字连接i (h)b rand commoditization 标准通用标记语言a (i)end-to-end digital connectivity 综合业务数字网 b (j)Bearer channel 品牌商品化 h(每小题5分,共15分)1.Wi-Fi is the trademark for the popular wireless technology used in home networks, mobile phones, video games and other electronic devices that require some form of wireless networking capability.Wifi是流行无线技术的标志,用在家庭网络、移动电话、电子游戏等其他需要某种形式的无线网络容量的电子设备上。