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问题详情

长壁工作面长度一般在（）

A、80-150m

B、120-200m

C、80-250m

D、100-250m

时间：2021-07-17 23:54 关键词：资源勘查工程专升本矿床学 2019级毕业清考（考试分）

答案解析

A

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