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采区前进式开采顺序是指采区[]依次开采。()

单选题
2021-07-19 06:47
A、由井筒向井田边界方向
B、由井田边界向井筒方向
C、由上山向井筒方向
D、由上山向井田边界
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正确答案
A

试题解析
A

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