问题 问答题 简答题

什么是“OBD”?

答案

参考答案:

OBD是英文On-Board Diagnostics的缩写,中文翻译为“车载自动诊断系统”。这个系统将从发动机的运行状况随时监控汽车是否尾气超标,一旦超标,会马上发出警示。当系统出现故障时,故障(MIL)灯或检查发动机(CheckEnginE.警告灯亮,同时动力总成控制模块(PCM)将故障信息存入存储器,通过一定的程序可以将故障码从PCM中读出。根据故障码的提示,维修人员能迅速准确地确定故障的性质和部位。

单项选择题
完形填空
We are warned by our teachers not to waste time because time 26 will never return. I think it quite 27. What does time look 28 ? Nobody knows, and we can’t see it or touch it and no 29 of money can buy it. Time is abstract(抽象的), so we have to  30 about it.
Time passes very quickly. Some students say they don’t have 31 time to review their lessons. It is 32 they don’t know how to make use of their time. They waste it in going to theatres or playing, and 33 other useless things. Why do we study everyday? Why do we work? Why do most people 34 take buses instead of walking? The answer is very 35 .We wish to save time because time is36.
Today we are living in the 21st century. We 37  time as life. When a person dies, his life ends. Since life is short, we must 38 our time and energy to our study so that we 39 be able to work and live well in the future. Laziness is the 40 of time, for it not only brings us 41 , but also does other 42 to us. If it is necessary for us to do our work today, 43 we do it today and not 44 it until tomorrow. Remember that time is much more 45.
小题1:
A.lostB.passedC.missedD.used
小题2:
A.importantB.trueC.interestingD.usual
小题3:
A.for B.likeC.afterD.over
小题4:
A.amountB.qualityC.quantity D.price
小题5:
A.think B.imagineC.examineD.check
小题6:
A.spare B.freeC.enoughD.much
小题7:
A.thatB.whyC.becauseD.certain
小题8:
A.doingB.makingC.takingD.getting
小题9:
A.needn’tB.have toC.had betterD.would rather
小题10:
A.easyB.simpleC.stupidD.interesting
小题11:
A.worthlessB.pricelessC.readyD.little
小题12:
A.look uponB.agree C.thinkD.believe
小题13:
A.spendB.giveC.setD.devote
小题14:
A.mustB.shouldC.mayD.would
小题15:
A.helperB.thiefC.friendD.teacher
小题16:
A.wealthB.healthC.failureD.illness
小题17:
A.danger B.harmC.troubleD.difficulty
小题18:
A.helpB.makeC.haveD.let
小题19:
A.keepB.remainC.manageD.leave
小题20:
A.valuableB.expensiveC.worthD.rich