单项选择题
（）refers to the tendency of a body of the ship to return to its original position after it is displaced therefrom.
A.Stability B.Responsibility C.Liability D.Visibility
单项选择题 Serving is（）.
单项选择题 Small hull leaks can be temporarily repaired by（）.
单项选择题 The control lever for the mechanical disengaging apparatus in a lifeboat shall（）.
