单项选择题
Container-ship capacity is normally expressed in（）.
A.deadweight tons B.measurement tons C.displacement tons D.TEU
单项选择题 （）will be paid by shipowner after tallyman doing the tally work.
单项选择题 An electronic chart system meeting IMO specifications for complying with chart carrying requirements is an（）.
单项选择题 The distance traveled by the center of gravity perpendicular to the original course is（）.
