准备采区，必须在采区构成_________后，方可开掘其他巷道。 -题库考试答案搜索网

准备采区，必须在采区构成_________后，方可开掘其他巷道。

单选题

2021-09-01 22:49

A、掘进系统
B、运输系统
C、排水系统
D、通风系统

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正确答案

D

试题解析

标签：联大河南理工大学矿井通风与安全课程设计

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