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单选,1分] 房柱式采煤法使用什么进行煤炭开采:【 】

多选题
2021-09-03 16:18
A、双滚筒采煤机
B、单滚筒采煤机
C、连续采煤机
D、刨煤机
查看答案

正确答案
C@#@C

试题解析

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