A.調(diào)度員 B.車(chē)站值班員 C.司機(jī) D.運(yùn)轉(zhuǎn)車(chē)長(zhǎng)
A.A B.B C.C D.D
A.DC40~DC130V B.DC45~DC135V C.DC45~DC150V D.DC50~DC150V