A.a continuous ringing for 10 seconds
B.one short ring followed by one long ring
C.two long rings of at least 20 seconds
D.a continuous ringing until the fire is extinguished
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A.remain on course and hold speed
B.change course and put the stern to the wind
C.change course to put the wind on either beam and increase speed
D.remain on course but slack the speed
A.fireman's outfit
B.low-velocity spray applicator
C.marine strainer
D.pick axe
A.accumulation of carbon dioxide gas that chokes the battery
B.accumulation of explosive and toxic gases the battery can generate
C.mildew or dry rot in the battery box
D.battery failure including battery case meltdown caused by excessive heat
A.cooling
B.smothering
C.chemical action
D.All of the above
A.immediately above the level of the oil
B.at the top of the tank
C.in the vent riser
D.one meter from the deck
A.Burning oil
B.Electrical
C.Paint
D.All of the above
A.directly outside the space protected by the system
B.as near the gas cylinders as possible
C.in the pilothouse
D.on the main deck near the bow
A.cooling
B.smothering
C.oxygen dilution
D.breaking the chain reaction
A.fuel tanks
B.spark plugs
C.carburetors
D.distributors
A.remote operated valve
B.fusible link
C.CO2 system pressure switch
D.heat or smoke detector
最新試題
Each fire pump on a ship must have a pressure gauge located at（）.
Dry chemical fire extinguishers are effective on which type(s) of fire?（）
Each fire hydrant must have at least one spanner and at least one（）.
Each hose in the fuel transfer system for helicopter refueling must meet the standards of the（）.
CO2 extinguishes a fire by（）.
Convection spreads a fire by（）.
A fire must be ventilated（）.
Each fireman’s outfit and its spare equipment on a vessel must be stowed（）.
Backfire flame arrestors are installed on（）.
A fire in electrical equipment should be extinguished by using（）.