The center of flotation of a vessel is the point in the waterplane（）.
1、A vessel the passage of which is not t
A vessel the passage of which is not to be impeded（）to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.Aremains fully obligedBhas no obligationCis not necessarilyDis exempted
2、For a floating vessel，the center of fl
For a floating vessel，the center of flotation is the point in the waterplane（）.Aabout which the vessel lists and trimsBwhich coincides with t...
3、If the result of loading a vessel is a
If the result of loading a vessel is an increase in the height of the center of gravity,there will always be an increase in the（）.Ametacentric heightBrighting armCrighting momentDvertical moment
4、The vessel is at a speed of 16（）.
The vessel is at a speed of 16（）.Akilometers per hourBmiles per hourCrevolution per minuteDmeters per hour
5、The stability of a vessel is normally
The stability of a vessel is normally the greatest when all fuel and water tanks are full because the （）.Acenter of gravity is loweredBcenter of buoyancy is loweredCreserve buoyancy is unchangedDhull freeboard is increased
6、（）is the tendency of a vessel to retur
（）is the tendency of a vessel to return to its origianl position after it is displaced therefrom.Ainclining momentBStabilityCShearing forceDBending moment