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下列因素中,________与工作面瓦斯涌出无关。
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下列因素中,________与工作面瓦斯涌出无关。
A、地面大气压变化
B、工作面推进速度
C、工作面采煤工艺
D、测点布置
时间:2021-09-01 22:49
关键词:
联大
河南理工大学
矿井通风与安全课程设计
答案解析
D
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