试题与答案

煤与瓦斯突出事故时,在通风系统未遭到严重破坏的情况下,原则上应()现有通风系统,保证

题型:单项选择题

题目:

煤与瓦斯突出事故时,在通风系统未遭到严重破坏的情况下,原则上应()现有通风系统,保证主要通风机的正常运转。

A.停止

B.改变

C.保持

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对

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