單項選擇題In order to determine the trimming arm for your vessel at any particular draft, which of the following would you compare?（）.

A.Longitudinal center of buoyancy and longitudinal center of gravity
B.Longitudinal center of floatation and longitudinal center of gravity
C.Longitudinal center of floatation and longitudinal center of buoyancy
D.Longitudinal tipping center and longitudinal center of gravity


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1.單項選擇題In order to minimize the effects of a tender vessel, when carrying a cargo of lumber, you should（）.

A.maximum your deck load
B.distribute lumber so that those stowing most compactly per until of weight are in the upper hilds
C.place the heaviest woods in the lower holds
D.keep the vessel's frame spaces free from lumber

2.單項選擇題In order to reduce the accumulation of static electricity while loading petroleum products, you should（）.

A.start to load at maximum pressure
B.start to load slowly
C.increase the air flow into the tank
D.use the overall method of loading only

3.單項選擇題In ship construction, frame spacing is（）.

A.greater at the bow and stern
B.reduced at the bow and stern
C.uniform over the length of the vessel
D.uniform over the length of the vessel, with the exception of the machinery spaces, where it is reduced due to increased stresses

4.單項選擇題In the absence of external forces, adding weight on one side of a floating vessel causes the vessel to（）.

A.heel until the angle of loll is reached
B.list until the center of buoyancy is aligned vertically with the center of gravity
C.trim to the side opposite TCG until all moments are equal
D.decrease draft at the center of flotation

5.單項選擇題In the absence of external forces, the center of buoyancy of an inclined vessel is vertically aligned directly below the（）.

A.center of gravity
B.amidships station
C.center of flotation
D.geometric center of the waterplane area