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[单选题]
CR400AF系列动车组发生电机轴承超温预警级(1级)(3120、3122、3124等)故障,若发现联轴节破损、偏斜;牵引电机破损;但可视范围内无异常未伴随其它组合故障,人工滚动试验后,随车机械师视情况通知司机限速()km/h维持运行,或请求救援。
A.40
B.80
C.120
查看答案
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.40
B.80
C.120
A.80
B.120
C.140
A.120
B.160
C.200
A.120
B.140
C.200
A.20
B.40
C.80
A.120
B.160
C.200
A.40
B.80
C.120
A.120
B.160
C.200
A.80
B.120
C.140