题目内容

进入有限空间作业时,应首先进行哪项操作()?

A. 检测
B. 作业
C. 通风
D. 记录

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According (10) ............ the authors,

A. for
B. from
C. to

Im still looking (8) ............the perfect solution.

A. to
B. at
C. for

decide (3) ............they were going and then use

A. where
B. who
C. why

2条钢丝绳吊货时,其夹角不应超过()

A. 70°
B. 90°
C. 120°
D. 150°

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