单选题
ALiquid cargo is loaded and discharged by pumps.
BLiquid cargo is loaded and discharged by tubes.
CLiquid bulk cargo is loaded and discharged by tubes.
DLiquid bulk cargo is loaded and discharged by pumps.
正确答案
答案解析
略
ALiquid cargo is loaded and discharged by pumps.
BLiquid cargo is loaded and discharged by tubes.
CLiquid bulk cargo is loaded and discharged by tubes.
DLiquid bulk cargo is loaded and discharged by pumps.