______ 是防治冲击矿压的有效办法和根本性的 ______ 。 -题库考试答案搜索网

是防治冲击矿压的有效办法和根本性的。

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2021-09-02 15:22

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开采解放层 @#@ 区域性防范措施。

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标签：联大河南理工大学矿山测量学

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