单项选择题
What is the stability term for the distance from the center of gravity (G) to the Metacenter (M)，when small-angle stability applies? （）
A.metacentric height B.metacentric radius C.height of the metacenter D.righting arm
单项选择题 What is the principal danger from the liquid in a half full tank onboard a vessel?（）
单项选择题 What is the definition of transverse metacenter?（）
单项选择题 To prevent loss of stability from free communication flooding you should（）.
