文档说明:本人针对该科精心汇总了历年题库及答案,形成一个完整的题库,并且每年都在更新。该题库对考生的复习、作业和考试起着非常重要的作用,会给您节省大量的时间。做考题时,利用本文档中的查找工具,把考题中的关键字输到查找工具的查找内容框内,就可迅速查找到该题答案。本文库还有期末考核试题、其他网核及教学考一体化、一网一平台复习试题与答案,敬请查看。
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本文由【广开搜题】微信公众号提供,禁止复制盗取,违者必究
本文由【广开搜题】微信公众号提供,禁止复制盗取,违者必究
序号:1
题目类型:【单选题】
题目:
The system’s characteristic equation can be used to determine _____ of a linear time-invariant system.选项:
A.the stability
B.magnitude of the steady-state error
C.the controllability
D.the observability
答案:the stability
序号:2
题目类型:【单选题】
题目:
The precision of ADC ( analog-to-digital conversion ) is determined by _____.选项:
A.its speed
B.its gain
C.the accuracy of the reference voltage
D.the number of binary bits
答案:the number of binary bits
序号:3
题目类型:【单选题】
题目:
A computer’s microprocessor only understands _____ in binary form.选项:
A.high-level languages
B.machine language
C.human languages
D.assembly language
答案:machine language
序号:4
题目类型:【单选题】
题目:
In a coal-fired power plant, an electrostatic precipitator is used to remove _____ from the combustion gases.选项:
A.solid particle
B.CO
C.water vapour
答案:solid particle
序号:5
题目类型:【单选题】
题目:
The Buck(降压式变换器) is a _____ converter.选项:
A.voltage step-up
B.current step-down
C.current step-up
D.resistance
答案:current step-up
序号:6
题目类型:【单选题】
题目:
_____ is used as coolant in light-water reactors.选项:
A.Gas
B.Organic compound
C.Molten salt
D.Water
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:7
题目类型:【单选题】
题目:
ON-OFF information can be represented by _____ signal.选项:
A.a digital
B.an analog
C.a discrete
D.a control
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:8
题目类型:【单选题】
题目:
The generator voltages are usually stepped up to the transmission voltage level by _____.选项:
A.series capacitor
B.parallel reactors
C.step-up transformers
D.step-down transformers
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:9
题目类型:【单选题】
题目:
The relation results in _____.选项:
A.null
B.identity
C.indefinite value
D.zero
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:10
题目类型:【单选题】
题目:
A computer printer is _____ device that produces computer-generated text or graphical images on paper.选项:
A.an input
B.an output
C.a storage
D.a data processing
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:11
题目类型:【单选题】
题目:
_____ carries data out to speakers and headphones, or back from a microphone.选项:
A.A graphics card
B.A modem
C.A network card
D.A sound card
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:12
题目类型:【单选题】
题目:
The transformer is a straightforward application of Faraday’s ______ Law.选项:
A.Ohm’s
B.Electromagnetic Induction
C.Kirchhoff’s Current
D.Kirchhoff’s Voltage
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:13
题目类型:【单选题】
题目:
The DC-DC converts _____ input to _____ output.选项:
A.direct current, alternating current
B.direct current, direct current
C.alternating current, alternating current
D.alternating current, alternating current
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:14
题目类型:【单选题】
题目:
When an induction motor with 10 poles is supplied by 50Hz three-phase ac power source, the synchronous revolutions per minute is _____. (Synchronous r/min = 120 f/p)
选项:
A.1000
B.900
C.700
D.600
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:15
题目类型:【单选题】
题目:
Resistors are _____ elements.选项:
A.passive
B.active
C.independent sources
D.dependent sources
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:16
题目类型:【单选题】
题目:
A D/A is a device that can convert a digital signal to the equivalent _____.选项:
A.digital form
B.numerical form
C.binary form
D.analog form
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:17
题目类型:【单选题】
题目:
In North American _____ is adopted as standard frequency in electric power system.选项:
A.25Hz
B.50Hz
C.60Hz
D.125Hz
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:18
题目类型:【单选题】
题目:
Delphi belongs to _____.选项:
A.low-level programming language
B.high-level programming language
C.a programming language connected with the computer hardware behavior
D.an assembly language
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:19
题目类型:【单选题】
题目:
The unit of logarithm of the magnitude of a transfer function is _____.选项:
A.radians per second
B.volts
C.decibel
D.octaves
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:20
题目类型:【单选题】
题目:
An expansion slot is a long, narrow socket on the motherboard into which you can plug _____.选项:
A.an expansion card
B.a modem
C.a network card
D.a sound card
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:21
题目类型:【单选题】
题目:
The algebraic sum of all voltages around a loop is _____.选项:
A.zero
B.indefinite value
C.sum of voltage rises
D.sum of voltage drops
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:22
题目类型:【单选题】
题目:
In cogeneration(热电联产,热电联供) systems, the overall energy efficiencies are raised by _____.选项:
A.important the combustion process
B.providing thermal energy to the customers
C.raising the steam temperature
D.reducing emissions
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:23
题目类型:【单选题】
题目:
The hydropower is well suited for switching according to _____ command to meet changing power needs.选项:
A.a consumer’s
B.a user’s
C.a dispatcher’s
D.an operator’s
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:24
题目类型:【判断题】
题目:
In China alternating current is usually generated at 60Hz. _____
选项:
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:25
题目类型:【判断题】
题目:
A computer’s microprocessor only understands high-level language. _____
选项:
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:26
题目类型:【判断题】
题目:
Electron will flow through a conductor from the positive terminal to the negative terminal. _____
选项:
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:27
题目类型:【判断题】
题目:
A digital computer controlled system is only designed for discrete variable. _____
选项:
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:28
题目类型:【判断题】
题目:
The commutator can change current direction in the conductor. _____
选项:
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:29
题目类型:【判断题】
题目:
In North American 50Hz is adopted as standard frequency in electric power system. _____
选项:
答案:更多参考答案,请关注【渝粤搜题】微信公众号
序号:30
题目类型:【判断题】
题目:
An output device, such as a keyboard or mouse, gathers input and transforms it into a series of electronic signals for the computer. _____
选项:
答案:更多参考答案,请关注【渝粤搜题】微信公众号
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