题目内容

爆炸极限一般为()。(难)

A. 1、02%~7%
B. 1、2%~8%
C. 0、8%~6、5%
D. 1、1%~8%

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在时间或空间上失去控制的燃烧所造成的灾害称为()。

A. 燃烧
B. 爆炸
C. 着火
D. 火灾

高放废液不允许长期贮存，要尽早进行()处理。

A. 固化
B. 灰化
C. 嬗变
D. 地质

Mary: Hi, Peter! Going away for the holidays, right？
Peter; Yes, I am. _51 _？
Mary: Well, I&39;m going to stay in the city.
Peter: What are you going to do then？Mary: _52_
Peter: ___53_？
Mary:No, never in a store, but I can learn.
Peter:___ 54_？
Mary:I need money for school next term, and I can get some experience. So, _55_ again？
Peter: Yes. I&39;ve gone camping four times. It&39;s wonderful at a summer camp.
Mary: Well, Peter, enjoy your holidays!Peter:&39; You too. See you!

对素材标记进行()操作，可实现仅设定当前编辑线位臵为视频入点。

A. VideoOut
B. VideoIn
C. In
D. Out