问题
问答题 简答题
煤炭开采引起岩层移动破坏,按其破坏程度不同,大致可以分为哪三带?
答案
参考答案:
冒落带、断裂带、弯曲带。
煤炭开采引起岩层移动破坏,按其破坏程度不同,大致可以分为哪三带?
参考答案:
冒落带、断裂带、弯曲带。
阅读理解。 | |||||||||||||||||||||
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