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【判断题】
培养矿柱、枕木可用摘芽法
A.
正确
B.
错误
题目标签：
枕木
矿柱
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】崩落法采矿永久损失的矿柱矿量是（）
A.
上盘三角矿柱矿量；
B.
下盘残留矿量；
C.
脊部残留矿量；
D.
下盘残留矿量与脊部残留矿量之和
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【单选题】充填体对矿柱的作用是()
A.
控制地压
B.
控制地压和限制围岩移动变形
C.
限制围岩移动变形
D.
防止围岩
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【判断题】崩落采矿法采空区靠矿柱自然支撑。
A.
正确
B.
错误
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【简答题】When you walk into a National Forest, you really believe you’re the first person who’s ever been here. Funny thing is you’re not. These forests have been used for over a hundred years. From this timbe...
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【判断题】崩落采矿法采空区靠矿柱自然支撑。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Miracle of the Forest When you walk into a National Forest, you really believe you’re the first person who’s ever been here. Funny thing is ,you’re not. These forests have been used for over a hundre...
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【简答题】When you walk into a National Forest, you really believe you’re the first person who’s ever been here. Funny thing is, you’re not. These forests have been used for over a hundred years. From this timb...
查看完整题目与答案
【简答题】When you walk into a National Forest, you really believe you’re the first person who’s ever been here. Funny thing is you’re not. These forests have been used for over a hundred years. From this timbe...
查看完整题目与答案
【简答题】When you walk into a National Forest, you really believe you’re the first person who’s ever been here. Funny thing is, you’re not. These forests have been used for over a hundred years. From this timb...
查看完整题目与答案
【简答题】When you walk into a National Forest, you really believe you’re the first person who’s ever been here. Funny thing is, you’re not. These forests have been used for over a hundred years. From this timb...
查看完整题目与答案
