问题
单项选择题
A system of cleaning the tanks by washing them with the cargo of crude oil while it is being discharged is known as().
A.cow
B.lot
C.cbt
答案
参考答案:A
A system of cleaning the tanks by washing them with the cargo of crude oil while it is being discharged is known as().
A.cow
B.lot
C.cbt
参考答案:A