更多"A vessel behaves as if all of its w"的相关试题:
[单项选择]The weight of the container and its contents is supported on deck by what part(s)?（）.
A. Four lower corner castings
B. Bottom，side，and end rails
C. Bottom flooring，side，and end rails
D. Bottom flooring only
[单项选择]Under the forces of its own weight，the suspended length of line will fall into a shape known as a（）.
A. polygon
B. holding arc
C. catenary curve
D. parabolic curve
[单项选择]A floating vessel will behave as if all of its weight is zcting downward through the（）.
A. center of gravity
B. center of buoyancy
C. center of flotation
D. metacenter
[单项选择]Rotating flyweights acting against spring pressure make a simple type of （）.
A. governor
B. safety valve
C. reducing valve
D. feed water regulator
[单项选择]The direct acting mechanical governor used with some small diesel engines, controls fuel flow to the engine by（）
A. governor flyweight action on a pilot valve which controls fuel injection
B. governor flyweight motion acting on fuel controls through suitable linkage
C. positioning a butterfly valve in the fuel delivery system positioning
D. a servomotor piston attached to the fuel controls
[单项选择]The single acting cylinder is the simplest form where pressure is applied to the full area of the piston head to move the load through piston rod extensionThe load causes rod （） when the drive pressure is released.
A. contraction
B. retraction
C. expansion
D. shrinkage
[单项选择]The result of two forces acting in opposite directions and along parallel lines，is an example of what type of stress?（）
A. Tensile
B. Compression
C. Shear
D. Strain
[单项选择]Tensile stress is a result of two forces acting in（）.
A. opposite directions on the same line，tending to pull the material apart
B. opposite directions on the same line，tending to compress the object
C. opposite directions along parallel lines
D. the same direction along parallel lines
[单项选择]In a single acting, four-stroke/cycle diesel engine, the power impulse in an individual cylinder occurs （）
A. once every crankshaft revolution
B. once every two crankshaft revolutions
C. once every piston stroke
D. twice every piston stroke
[单项选择]In a single acting, two-stroke/cycle, diesel generator engine, the power impulse in an individual cylinder occurs （）
A. once every crankshaft revolution
B. once every two crankshaft revolutions
C. once every piston stroke
D. twice every piston stoke
[单项选择]When air is at its dew point it is at its（）
A. lowest absolute humidity
B. lowest relative humidity
C. highest absolute humidity
D. highest relative humidity
[单项选择]Weight is considered during the periodic required inspection and servicing of（）.
A. CO2 (carbon dioxide) fire extinguishers
B. foam fire extinguishers
C. water (stored pressure) fire extinguishers
D. All of the above
[单项选择]Jettisoning weight from topside（）.
A. returns the vessel to an even keel
B. reduces free surface effect
C. lowers the center of gravity
D. raises the center of buoyancy
[单项选择]Assuming an even transverse distribution of weight in a vessel，which condition could cause a list?（）.
A. Empty double-bottoms and lower holds，and a heavy deck cargo
B. Flooding the forepeak to correct the vessel's trim
C. Having KG smaller than KM
D. Having a small positive righting arm
[单项选择]The force acting on a single cargo runner which is vertically lifting or lowering a load is greatest when（）.
A. decelerating when lowering the load
B. decelerating when raising the load
C. lowering the load at constant speed
D. raising the load at constant speed
