A.cargo runners
B.stays
C.topping lifes
D.All of the above
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A.being rigged combined
B.is rigged combining
C.rigs combining
D.is rigged combined
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
最新試題
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（）.
The circulation around a low pressure center in the Northern Hemisphere is（）.
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.
（）is on the panel of radar.
In the Northern hemisphere northerly winds may cause temperature（）.
Berthing means bringing a vessel to her berth until（）.
Before any loading takes place any signs of the previous cargo should do（）.
The dew point temperature is（）.
The mean draft of a ship is the draft（）.