单项选择题
A.5min B.10min C.15min D.20min
A.2s-5s B.5s-10s C.5s-30s D.10s-30s
A.整车空调开启通风模式 B.整列车客室门进行隔离测试 C.整列车客室门进行门障碍检测 D.100次开关门实验