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问题
插管抽采法是把带孔眼的管子在顶板冒落前直接插入采空区内进行抽采。
8 查阅
插管抽采法是把带孔眼的管子在顶板冒落前直接插入采空区内进行抽采。
A.正确
B.错误
点击查看答案
参考答案:
答案:正确
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