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巷道卸压方法有()。
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巷道卸压方法有()。
A、在巷道周围形成槽孔
B、在巷旁形成卸压空间
C、小面积区域性卸载
D、大面积区域性卸载
时间:2021-09-03 16:51
关键词:
联大
河南理工大学
矿山压力及其控制
答案解析
A@#@B@#@D
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巷道卸压方法有()。
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