A.支撐車體、傳遞載荷 B.使車輛順利通過曲線 C.傳遞牽引力 D.傳遞制動(dòng)力
A.空氣干燥器 B.空氣壓縮機(jī) C.風(fēng)缸 D.壓力開關(guān)
A.Automobile Train Control B.Automatic Train Confirm C.Automatic Track Control D.Automatic Train Control