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我国变电站一次主接线备用电源自动投入的主要一次接线方案有:低压母线分段备自投接线、( )及进线备自投接线等。
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我国变电站一次主接线备用电源自动投入的主要一次接线方案有:低压母线分段备自投接线、( )及进线备自投接线等。
A、暗备用自投
B、变压器备自投接线
C、明备用自投
D、无功备用自投
时间:2021-07-17 23:25
关键词:
电力系统自动化技术
高起专
电力系统分析
2020年第二学期补考
答案解析
B
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