单项选择题
A negative metacentric height （）.
A.should always be immediately corrected B.will always cause a vessel to capsize C.always results from off-center weights D.All of the above are correct
单项选择题 A navigator fixing a vessel’s position by radar （）.
单项选择题 A natural fiber rope can be ruined by dampness because it may （）.
单项选择题 A mooring line leading at nearly right angles to the keel is a （）.
