轨道交通企业在夜间必不可少的一项工作是（）。检查工程车巡道供电系统轨道线路 - 查题网

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国家开放大学 / 城市轨道交通安全管理

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轨道交通企业在夜间必不可少的一项工作是（）。
检查工程车

巡道

供电系统

轨道线路

积分

城市轨道交通安全管理

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