试题与答案

下列选项不属于开采保护层的作用的是：（）。 A.缓和和降低地压，弹性潜能得到缓慢释放

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题型：单项选择题

题目：

下列选项不属于开采保护层的作用的是：（）。

A.缓和和降低地压，弹性潜能得到缓慢释放

B.排放瓦斯，降低煤层瓦斯压力

C.改变了煤的物理机械性质

D.有利于临近煤层开采

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A

考点：安全生产知识竞赛煤矿应急救援考试煤矿应急救援考试题库
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