单项选择题
A.trailers B.rolling vehicles C.containers D.All of the above
Cargo securing for Ro-Ro is based on the concept of（）.A...
单项选择题Cargo securing for Ro-Ro is based on the concept of（）.
A.solid packing B.rapid loading and discharge C.vessel loaded full and down to her marks D.palletized cargo
Cargo booms must be weight tested to recertify the Safe...
单项选择题Cargo booms must be weight tested to recertify the Safe Working Load (SWL) every（）.
A.year B.two years C.four years D.five years
By regulation，cargo tanks must be inert before and duri...
单项选择题By regulation，cargo tanks must be inert before and during what operation?（）.
A.Stripping B.Loading C.Cleaning D.Crude oil washing
