作业场所氧含量低于＿时，严禁人内以免造成窒息事故。A.18% B.2

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问题单项选择题

作业场所氧含量低于＿时，严禁人内以免造成窒息事故。

A.18%

B.21％

C.30%

D.15％

答案

参考答案：A

选择题

--- I’m sorry I won’t be able to go with you.

--- But you _______ me you _________.

A．told; were going to

B．have told; were going to

C．have told; would go to

D．Had told; were going to

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