A.12B.10C.8D.6
A.20 B.10 C.8 D.6
A.司機(jī) B.運(yùn)轉(zhuǎn)車(chē)長(zhǎng) C.車(chē)輛乘務(wù)員 D.車(chē)輛乘務(wù)長(zhǎng)