问题：
[单选] Stability is determined principally by the location of two points in a vessel: the center of buoyancy and the（）.
metacenter。geometric center of the waterplane area。center of gravity。center of flotatio。
问题：
[单选] The angle of loll is a stability term which applies to a floating ship with（）.
off-center loading。stiff characteristics。excessive pitch or roll。negative initial stability。
问题：
[单选] The downflooding angle for a ship is the maximum angle at which（）.
stability is positive。neutral equilibrium exists。the load line is not submerged。intact stability curves are valid。
问题：
[单选] The effect of free surface on initial stability depends upon（）.
the amount of liquid in the compartment。the dimensions of the liquid surface and the vessel's displacement。only the length of the compartment。the vertical position of the liquid in the vessel。
问题：
[单选] The effects of free surface on a vessel’s initial stability do NOT depend upon the（）.
volume of displacement of the vessel。dimensions of the surface of the liquid。amount of liquid in slack tanks。specific gravity of the liquid in the tank。
问题：
[单选] The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the（）.
volume of liquid in the tank。volume of displacement of the vessel。location of the tank in the vessel。height of the center of gravity of the vessel。
问题：
[单选] The greatest effect on stability occurs from loose liquids flowing（）.
from side to side in the tanks of the vessel。from fore to aft in the tanks of a vessel。in and out of a vessel that is holed in a wing tank。in and out of a vessel that is holed in a peak tank。
问题：
[单选] The important initial stability parameter，GM，is the（）.
metacentric height。height of the metacenter above the keel。height of the center of buoyancy above the keel。height of the center of gravity above the keel。
问题：
[单选] The maximum angle at which the intact stability curves are valid for ship’s is the angle for（）.
the limit of positive stability。the limit of small-angle stability。maximum offset。downflooding。
问题：
[单选] The stability of a semisubmersible ship would be seriously reduced if flooding occurred in the（）.
submerged hulls。column void spaces。dry mud tanks。ballast tank。
