27、为了防止输送机下滑，煤层倾角大于（）时，安装防滑千斤顶。 A、 18° B、 10° C、 12° - 查题网

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成人高等教育 / 煤矿开采学

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27、为了防止输送机下滑，煤层倾角大于（）时，安装防滑千斤顶。

A、
18°
B、
10°
C、
12°

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煤矿开采学

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