重锤式安全阀是怎样工作的?

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问题:

重锤式安全阀是怎样工作的?

考点:锅炉工锅炉工题库
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补全对话(10分)

A; Hi,Bill!Congratulations!

B:Thank you .You watched the match ,didn’t you ?

A: Of  course .

B: It wasn’t easy to win the match .____小题1:______

A:  But your team is even stronger .

B: We must thank our PE teacher .He kept telling us to remember teamwork.______小题2:______.

A :Yes ,I agree .Teamwork is very important in playing football.____小题3:____.

B : That’s true .

A: I hear the No. 2 Middle School team is playing against the No. 3 Middle School team . Lets go and watch it .

B:_____小题4:_______.

A:_____小题5:_______.

选项

A.What a pity !

B.Yes , but it has already finished .

C.The No. 2 Middle School team is really strong .

D.A single good player can never win a match .E. We did as he told us and we won the first place in the league at last !

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铀(92235U)已经成为新能源的主角。下列有关说法错误的是

A.原子序数为92

B.质子数为92

C.电子数为92

D.中子数为92

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牙周膜内牙骨质小体可能是

A.变性的成牙骨质细胞钙化而形成

B.变性的上皮细胞钙化而形成

C.变性的成纤维细胞钙化而形成

D.变性的牙骨质细胞钙化而形成

E.变性的牙囊细胞钙化而形成

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在太空的空间实验室里生长的GaAS具有很高的载流子迁移率,是因为这样的材料()。

A.无杂质污染

B.受宇宙射线辐射

C.化学配比合理

D.晶体完整性好

题型:问答题 简答题

安全生产工作中的“四不伤害”是指().

A、不伤害自己

B、不伤害他人

C、不被他人伤害

D、保护他人不受伤害

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