单项选择题
A vertical shift of weight to a position above the vessel’s center of gravity will（）.
A.increase reserve buoyancy B.decrease the righting moments C.decrease KG D.increase KM
单项选择题 A moment is obtained by multiplying a force by its（）.
单项选择题 A load line is assigned to a ship to insure adequate stability and（）.
单项选择题 （）refers to the depth of a vessel below the waterline，measured vertically to the lowest part of the hull，propellers or other reference points.
