【单选题】
正常情况下，直流1号汇流条（DC BUS 1)由TR1 供电，如果TR1过流保护脱开了，该汇流条将由谁供电？___
A. 由TR2直接供电
B. 由直流2号汇流条直接供电
C. 不再有电源供应了
D. 由直流2号汇流条经过电瓶汇流条对其供电
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答案
C
解析
暂无解析
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【单选题】
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