因溴冷机突然停冷水而发生排管冻结的概率是()。A.肯定发生 B.不会发生 C.偶尔发

题型:单项选择题

问题:

因溴冷机突然停冷水而发生排管冻结的概率是()。

A.肯定发生

B.不会发生

C.偶尔发生

D.一半

考点:制冷工考试制冷工考试题库
题型:单项选择题
先阅读解方程
x-1
x
-
1-x
x+1
=
5x-5
2x+2
的过程,然后回答问题:
将方程整理为
x-1
x
+
x-1
x+1
=
5(x-1)
2(x+1)
(第一步)
方程两边同时除以(x-1)得
1
x
+
1
x+1
=
5
2(x+1)
(第二步)
去分母,得2(x+1)+2x=5x(第三步)
解这个整式方程,得x=2    (第四步)
上面解题过程中:
(1)第二步变形的依据是______;
(2)出现错误的是______;
(3)上述解题过程还缺少______;
(4)本题正确的解为______.
题型:单项选择题

The film brought the hours back to me _____  I was taken good care of in that far-away village. [ ]

A. until

B. that

C. when

D. where

题型:单项选择题

滚动轴承轮对车轮踏面磨耗或局部凹下深度的段修限度为1mm。

题型:单项选择题
Have you ever tried to draw a straight line, only to find it turns out all wrong? Or, wanted to show   36  at a party but the song you’d practised so many times suddenly   37  more difficult?
I've had both these   38 .As a Senior 3 student, I have to   39  many exams. Each time I enter one thinking “I   40  fail this time.” , I get a low mark.
But don't be surprised --- it's not   41  we don't try, or do enough preparation, or take it   42 . On the contrary, it is because we put ourselves under too much   43 . It is thinking ‘I must…’ that makes us taste the terrible flavor of   44 .
We often   45  to our friends, “Don't be too hard   46  yourself!”. But when we   47  our own goals, we may not listen to our own advice.
In doing so, we are making our path to success increasingly difficult.
So why not   48  this crazy pursuit(追求) to get the best? Just face the problem   49  before you with a calm mind, enjoy the hard work and you will succeed.
In my opinion,   50  a calm state of mind is a skill for life. For people who want to succeed,   51  this is a very important lesson.
So   52  time when you're trying to draw a straight line or   53  a performance, tell yourself, “If I can just do it better than last time, it's a   54 . ”
Keep a calm state of mind, and you will be happy   55  you succeed or fail.
小题1:
A.upB.offC.outD.in
小题2:
A.assumesB.appearsC.listensD.becomes
小题3:
A.experiencesB.chancesC.timesD.reviews
小题4:
A.finishB.measureC.takeD.join
小题5:
A.shouldn'tB.mayC.can'tD.haven't
小题6:
A.whyB.sinceC.whenD.because
小题7:
A.necessarilyB.seriouslyC.personallyD.sharply
小题8:
A.careB.powerC.pressureD.attention
小题9:
A.examsB.difficultyC.marksD.failure
小题10:
A.sayB.speakC.tellD.talk
小题11:
A.offB.onC.toD.for
小题12:
A.shareB.achieveC.weighD.set
小题13:
A.throw away B.get awayC.take awayD.let away
小题14:
A.waitingB.sittingC.lyingD.laying
小题15:
A.stayingB.keepingC.remainingD.making
小题16:
A.tryingB.realizing C.usingD.training
小题17:
A.lastB.whatC.nextD.high
小题18:
A.put onB.play onC.give onD.show on
小题19:
A.successB.taskC.lessonD.trial
小题20:
A.ifB.eitherC.neitherD.whether
题型:单项选择题

N5006-20ONU满配用户数是()。

A.64路语音

B.128路数据

C.256数据

D.512语音

更多题库