单项选择题
A.1000~1500VDC B.1000~1500VAC C.1000~2000VAC D.1000~2000VDC
A.每节车均设有制动电阻箱 B.只有动车设有制动电阻箱 C.拖车没有设置制动电阻箱 D.B、C车都设有制动电阻箱
A.DC36V B.DC110V C.AC220V D.DC24V