A.牽引變壓器B.牽引電阻器C.牽引電機D.牽引變流器
A.閘瓦緊抱車輪而緩解B.閘瓦離開車輪而緩解C.閘瓦離開車輪而制動D.閘瓦緊抱車輪而制動
A.380VDC/1minB.500VDC/1minC.1500VDC/1minD.2500VDC/1min