铁路机车车辆驾驶人员资格考试CRH2A型动车机车驾驶理论单项选择题每日一练(2018.03.04)

A.20
B.25
C.30
D.35

A.6
B.12
C.25
D.10

A.90km/h
B.120km/h
C.110km/h
D.100km/h

A.50HZ
B.60HZ
C.40HZ
D.70HZ

A.0.25
B.0.35
C.0.5
D.0.15