单项选择题
A.CCUB.ACMC.MCMD.BCU
A.升弓B.断电降弓C.切除受电弓D.切除受电弓U13阀组
A.高压牵引设备故障B.车门故障C.CCU故障D.BCU故障
A.主控端司机室B.监控室C.乘务员室D.客室
A.5B.30C.60D.120
A.80km/hB.120km/hC.100km/hD.200km/h
A.6B.4C.2D.1
A.列车右侧B.列车交会侧C.列车左侧D.列车非交会侧
A.10‰B.15‰C.20‰D.25‰
A.50km/hB.40km/hC.15km/hD.30km/h
A.2B.4C.6D.7