单项选择题
In the absence of external forces，the center of gravity of a floating vessel is located directly above the（）.
A.metacenter B.amidships C.center of flotation D.geometric center of the displaced volume
单项选择题 The ship’s draught forward is same as her draught aft.This condition is named as（）.
单项选择题 The ship’s draught forward is slightly deeper than the draught aft．This condition is called（）in shipping terms.
