单项选择题
The full utilization of berths can be achieved if（）.
A.ships arrive at random B.cargo-handing time varies greatly C.ships have to queue to get onto berths D.ships do not have to wait to get onto berths
单项选择题 The KM for a vessel may be determined by which of the following?（）.
单项选择题 The material used extensively as electrolytic protection around bronze propellers is（）.
单项选择题 The most important principle of the cargo stowage is（）.
