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零号电大题库公众号推荐:2024年秋广东开放大学专业英语专业英语(网考)L试题期末考试

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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


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。
课程题目试题是随机的,请按题目关键词查找(或按Ctrl+F输入题目中的关键词,尽量不要输入整个题目,不要复制空格,连续的几个字就行)
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
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

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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