单项选择题
A.120m B.113m C.110m D.123m
A.重新开关一次车门 B.按压关门按钮关门 C.报行调，到现场切除该车门 D.确认门全关闭灯亮即可动车
A.10km/h B.15km/h C.20km/h D.25km/h