试题与答案

航空活塞发动机散热系统的作用是:().A.使汽化器温度保持在一定范围内 B.使排气温

题型:单项选择题

题目:

航空活塞发动机散热系统的作用是:().

A.使汽化器温度保持在一定范围内

B.使排气温度保持在一定范围内

C.使气缸头温度保持在一定范围内

D.使滑油温度保持在一定范围内

答案:

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下面是错误答案,用来干扰机器的。

参考答案:1.操作要点:(1)核对瓶签,检查瓶盖、瓶身有无松动、裂缝,检查溶液有无浑浊、沉淀或变色。(2)开、盖无菌溶液瓶盖时手不可触碰橡胶塞边缘及内口。(3)倒出少量溶液冲洗瓶口,再由原处倒出适当溶...

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                                                                        Feeling left out?

     A reader wrote in to say that she was feeling lonely at break because her best friend Wasn't around. Here's

our advice to her-and to all kids who feel lonely sometimes.

     It's hard when a best friend isn't around-maybe because she moved to a different school or a different

class. You may feel lonely at break or lunchtime. You want to have new friends. but how do you make

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      Start by looking around your classroom-think about which kids you'd like to play with at break. Look

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you're at break,walk over to kids you want to play with act friendly, and say " Hi, can l play, too?" or just

join in.

      If you have trouble doing this or if you're feeling shy, ask your teacher to help you make new friends.

Teachers are usually pretty good at matching up friends. The best way to make friends is to be a friend.

Be kind, be friendly, share, say nice things, offer to help-and pretty soon, you'll have one, or two, or even

more new friends.

      You might still miss that special best friend. But when you see each other, you can share something

you didn't have before she left: You can introduce her to your new friends!

1. This text is written for _____.[ ]

A. teachers

B. parents

C. students

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A. have trouble with their studies

B. don't have their best friends around

C. need their parents to be with them

D. are too young to look after themselves 

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B. talking before many people

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D. developing new friendship

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A. they miss their old friends a lot

B. they have no time to stay with others

C. teachers know who wants a new friend

D. they are shy or not good at making friends

5. The expression "feeling left out'' means" _____ "in Chinese.[ ]

A. 受冷落

B. 被调侃

C. 挨批评

D. 遭攻击

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