A.empty
B.fully ballasted
C.partially ballasted
D.sealed
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A.Movable ladders
B.Fixed ladders
C.Safety booms
D.Elevators
A.air temperature at the time of the exposure
B.air pressure at the time of the exposure
C.humidity at the time of exposure
D.duration of the exposure
A.spring-loaded line thrower
B.hand thrown buoyant line
C.shoulder type line throwing gun
D.heaving line
A.Concentration of weight aft
B.Concentration of weight forward
C.Concentration of weight amidships
D.Concentration of weight at both ends of the vessel
A.The running reflection
B.The turning effect
C.The moving speed
D.The changing sensibility
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Hanging a barge off means to（）.
Generally speaking，in the Northern Hemisphere，when winds are blowing from between SE and SW the barometric reading（）.
Halon fire extinguishers are NOT effective when used on which types of fires?（）
From your position you observe a rotating white and green light to the north. This light is most likely（）.
Hot air can hold（）.
How does foam extinguish an oil fire?（）
Fusible-link fire dampers are operated by（）.
How does the effect known as “bank suction” act on a single-screw vessel proceeding along a narrow channel?（）
Good seamanship while towing in heavy weather requires all of the following EXCEPT（）.
How does a coast radio station communicating by HF radio normally identify itself?（）