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采用电动车运输的矿井,由井底车场到作业地点所经平巷长度超过()时,应设专用人车运送人员 943

发布日期:2021-08-27

采用电动车运输的矿井,由井底车场到作业地点所经平巷长度超过()时,应设专用人车运送人员 943
A

1000m

B

1500m

C

600m

D

2500m

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