航海英语船舶浮性章节练习(2018.02.28)

单项选择题
The two points that act together to trim a ship are the（）.
A.LCF and LCB
B.LCG and LCB
C.metacenter and LCG
D.VCG and LCG
单项选择题
The ship has（）of more than 10 meters at full load.
A.an engine
B.an overall length
C.a displacement
D.a draft
单项选择题
The volume of watertight spaces of a vessel above its waterline is the vessel’s（）.
A.free surface
B.marginal stability
C.reserve buoyancy
D.freeboard
单项选择题
When a vessel is inclined by an external force，the（）.
A.shape of the vessel's underwater hull remains the same
B.vessel's center of gravity shifts to the center of the vessel's underwater hull
C.vessel's center of buoyancy shifts to the center of the vessel's underwater hull
D.vessel's mean draft increases
单项选择题
What is NOT an advantage of the house-fall system when compared to a married-fall system using two of the ship’s booms? （）
A.There is a steady spotting area under the dockside block
B.Loading can be accomplished from a narrow apron without endangering the inboard boom
C.The system can be used for working the second deck of a warehouse
D.There is more accurate control of cargo drafts required to be stowed in the wings
单项选择题
The difference between the starboard and port drafts due to wind or seas is called（）.
A.list
B.heel
C.trim
D.flotation
单项选择题
The change in trim of a vessel may be found by（）.
A.dividing the trim moments by MT1
B.subtracting the LCF from the LCB
C.looking at the Hydrostatic Properties Table for the draft of the vessel
D.dividing longitudinal moments by the displacement
单项选择题
The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.
A.only when there is positive stability
B.only when there is negative stability
C.only when there is neutral stability
D.at all times
单项选择题
The TPC curve，one of the hydrostatic curves in a vessel’s plans，gives the number of tons（）.
A.necessary to change the angle of list 1°at a given draft
B.necessary to change trim 1 cm at a given draft
C.pressure per square cm on the vessel's hull at a given draft
D.necessary to further immerse the vessel 1 cm at a given draft
单项选择题
A neutral equilibrium position for a vessel means that the metacenter is（）.
A.lower than the keel
B.at the same height as the center of gravity
C.exactly at midships
D.at the center of the waterplane area