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
D.coferdam
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When planning the loading or discharging of a VLCC (100，000 DWT+) what is the most important consideration?（）
A.Draft and trim
B.Limits of the bending moments
C.Rate of discharging
D.Rate of loading -
单项选择题
In all cases，however，the capacity of segregated ballast tanks shall be（）such that，in any ballast condition at any part of the voyage，including the conditions consisting of lightweight plus segregated ballast only，the ship’s draughts and trim can meet the necessary requirements.
A.at least
B.at most
C.so big as
D.as large as -
单项选择题
A vessel loads edible oil in a deep tank through a manhole at the midlength of the tank. In order to fill the tank to maximum capacity，what trim should the vessel have?（）.
A.Down by the bow
B.Down by the stern
C.Down by either the bow or stern
D.In level trim
