问题
单项选择题
Which space cannot be deducted from gross tonnage when calculating net tonnage（）.
A.Crew messroom
B.Forepeak ballast tank
C.Master's cabin
D.Chain locker
答案
参考答案：B
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Which space cannot be deducted from gross tonnage when calculating net tonnage（）.
A.Crew messroom
B.Forepeak ballast tank
C.Master's cabin
D.Chain locker
参考答案：B