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[单选题]
当动车组空调装置故障超过()分钟仍不能及时排除,且应急通风功能失效无法满足要求时,随车机械师应及时通知列车长,列车长根据车内温度及通风情况作出打开部分车门通风的决定。
A.5min
B.10min
C.15min
D.20min
查看答案
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A.5min
B.10min
C.15min
D.20min
A.10
B.20
C.30
D.40
A.单相50Hz,400V
B.三相50Hz,400V
C.三相50Hz,400V【+24/-37】%
D.单相50Hz,400V【+24/-37】%