Which of the listed sections of an emergency switchboard is used to supply power for alarm signals under emergency conditions?
所属题库：二管轮
题目介绍:
Whichofthelistedsectionsofanemergencyswitchboardisusedtosupplypowerfor
alarmsignalsunderemergencyconditions?,
The generator and bus transfer section?The 450 volt, 60 cycle, 3 phase bus?The 120 volt, 3 phase, 60 cycle bus?The 24 volt DC bus? 本题为最佳选择题收录于二管轮题库中。
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