题目内容
(请给出正确答案)
[单选题]
客室空调紧急逆变器在紧急运行时将()电源逆变为()电源
A.110Vdc/400Vdc
B.400Vac/110Vdc
C.110Vdc/400Vac
D.400Vdc/110Vdc
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A.110Vdc/400Vdc
B.400Vac/110Vdc
C.110Vdc/400Vac
D.400Vdc/110Vdc
A.空调机组送风机
B.司机室送风单元
C.应急照明及排风机供电
D.紧急通风