船用发电机的轴与滚动轴承的配合松动、离心泵的轴与叶轮的配合松动均可采用()修理,获得

题型:单项选择题

问题:

船用发电机的轴与滚动轴承的配合松动、离心泵的轴与叶轮的配合松动均可采用()修理,获得良好的修理质量。

A.铁水泥

B.环氧树脂

C.液态密封胶

D.厌氧胶

考点:轮机工程非金属材料非金属材料题库
题型:单项选择题
一 I failed my driving test.
一 Never mind. _____.  

A. Better luck next time
B. Better later than never
C. No pains, no gains
D. Well begun is half done
题型:单项选择题

流式细胞仪液流系统中鞘液的主要作用是().

A.使待测细胞成为单个细胞悬液

B.使样本进入流动室形成样本流

C.使样本处于喷嘴中心位置以保证检测精确性

D.使细胞以稳定的速度通过流动室

E.使细胞流动的方向与激光束垂直相交

题型:单项选择题

小提琴协奏曲《梁祝》的作者是何占豪、陈钢,作品完成于()年。

题型:单项选择题
Mobile phones are everywhere in big cities. It seems that   36  can survive without one. Mobile phones are a great   37  to stay connected with friends and family.   38  , it is important to remember that there are certain times   39  you should not be using your phone, especially as a student, during school.
__40  you are in class, you should not be sending your friends text messages   41 taking phone calls. Your classmates and teacher should not have to deal with this rude   42  . Aren’t you at school to learn?
In the United States, students would never be allowed to   43  their mobile phones during class. If you were to send or   44  a text message you would probably be kicked   45_ class. It is very disturbing to hear a lot of tones and ringing during   46 . There are many more rules for mobile phone use in America and it is to   47  respect for those around you.
As a teacher in China, I have to   48  students using mobile phones every day. I have told my class to   49  their phones, but many students do not listen. The   50  to be connected all the time seems to be more   51  than the desire to learn.
It’s easy to understand   52  it is so tempting(诱惑人的) to have your phone on during class. It seems so easy just to send a short text message; it’s not hurting anyone, is it? But you may actually be hurting   53  when you do this. Your teacher knows when you use your phone and may give you a   54  grade. Sending a text message also takes your attention away from what’s going on in class, you may   55  something important.
小题1:
A.oneB.somebodyC.someoneD.no one
小题2:
A.wayB.roadC.methodD.path
小题3:
A.ButB.HoweverC.SoD.Therefore
小题4:
A.whichB.thatC.whenD.where
小题5:
A.AfterB.BeforeC.BecauseD.If
小题6:
A.orB.andC.as well asD.instead of
小题7:
A.actB.actionC.habitD.behavior
小题8:
A.haveB.takeC.useD.send
小题9:
A.receiveB.acceptC.makeD.get
小题10:
A.ofB.offC.outD.out of
小题11:
A.schoolB.classC.officeD.home
小题12:
A.askB.suggestC.showD.answer
小题13:
A.doB.dealC.do withD.deal with
小题14:
A.turn onB.turn downC.turn offD.turn in
小题15:
A.desireB.wishC.hopeD.expect
小题16:
A.possibleB.importantC.necessaryD.interesting
小题17:
A.whyB.whatC.thatD.whether
小题18:
A.himselfB.herselfC.ourselvesD.yourself
小题19:
A.lowerB.higherC.betterD.upper
小题20:
A.forgetB.rememberC.missD.leave
题型:单项选择题

汇出国外汇款种类包括()。

A.电汇;

B.信汇;

C.票汇;

D.汇款直通车。

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