A.being rigged combined
B.is rigged combining
C.rigs combining
D.is rigged combined
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A.should be worn while fighting a fire
B.can be used in atmosphere deficient in oxygen
C.filter contaminants from air that is to be breathed
D.may be substituted for a self-contained breathing apparatus
A.settle near the bottom of the blige
B.settle near the top of the bilge
C.settle evenly throughout all levels of the bilge by mixing with air
D.disperse to atmosphere
A.sweep flames away with water spray
B.shut off the leak
C.use a chemical foam fire extinguisher
D.call t e local fire department
A.Non-toxic gas
B.oxygen
C.Hydrogen
D.Helium
A.towing bridle
B.main weather cover
C.external lifelines
D.righting strap
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According to the relevant regulation, lifeboat should be powered by（）.
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
（）is on the panel of radar.
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.
Manoeuvring information can not be obtained from（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
Which of the following shall not the officers in charge of the navigational watch do?（）