__________的采煤工作面不得采用下行通风。 -题库考试答案搜索网

__________的采煤工作面不得采用下行通风。

单选题

2021-09-01 22:49

A、高瓦斯矿井
B、低瓦斯矿井
C、煤与瓦斯突出矿井
D、高温矿井

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正确答案

C

试题解析

标签：联大河南理工大学矿井通风与安全课程设计

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