安全规程规定,底下泵房的排水能力应超过雨季最大涌水量的()。A.10% B.20%

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问题:

安全规程规定,底下泵房的排水能力应超过雨季最大涌水量的()。

A.10%

B.20%

C.50%

D.100%

考点:矿井泵工矿井泵工题库
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People like to say “Thank you” when others help them or say something kind for them. It is a very good habit.

You should say “Thank you” when someone walking ahead of you keeps the door open for you, when someone says you have done your work well, or you have bought a nice thing, or your city is beautiful. We can use “Thank you” not only between friends, but also between parents and children, brothers and sisters.

“Excuse me” is another short sentence we often use. When you hear someone say so behind you, you know that somebody wants to walk pass you without touching you.  When others are talking, if you want to speak to one of them, say “Excuse me” first, and then begin talking. You should also do so when you begin to cough or make any noise before others.

Let’s learn to say “Thank you” and “Excuse me”.

小题1:You should say “Thank you” when__________.

A.you say something kind to others

B.you help others

C.someone helps you

D.you are in trouble小题2:When you are going to ask someone to tell you the way, you should say “_______”.

A.Thank you

B.That’s very kind of you

C.Excuse me

D.The same to you小题3:The passage mainly tells us the way____________.

A.to be happy

B.to be polite

C.to help others

D.to be healthy

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一般说来,世界观决定方法论,方法论体现着世界观。[ ]

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一位同学认为两个力方向相同时产生的合力最大,你认为对吗?请你设计一个实验进行探究(简述你的方案).

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世界上第一部由国家政府颁布的药典是唐代()

题型:单项选择题

以下药物中应检查的特殊杂质是

黄体酮

A.游离水杨酸
B.游离肼
C.对氨基苯甲酸
D.其他甾体
E.盐酸

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