A.dry chemical
B.alcohol foam
C.carbon dioxide
D.All of the above
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A.more than 6 short blasts and 1 long blast on the whistle，and the same signal on the general alarm
B.continuous sounding of the ship's whistle and the general alarm for at least 10 seconds
C.1 short blast on the whistle
D.alternating short and long blasts on the ship's whistle
A.replace the gasket in the male coupling
B.reduce fire pump pressure
C.replace the gasket in the female coupling
D.rethread the male coupling
A.cool the bulkheads around the fire
B.remove combustibles from direct exposure
C.close all openings to the area
D.shut off all electric power
A.glycerine
B.graphite
C.kerosene
D.fresh water and soap
A.Operate the trigger valve
B.Weigh the extinguisher
C.Test with a pressure gauge
D.Read the date of last test
最新試題
The success of an indirect attack on a fire depends on the（）.
What is required in addition to the heat，fuel，and oxygen of the fire triangle to have a fire?（）
To remedy a leaking fire hose connection at the hydrant，secure the valve and（）.
What is the most important characteristic of the extinguishing agent in fighting a class C fire?（）
To lubricate the swivel or remove corrosion from a fire hose coupling，you should use（）.
There are two disadvantages to CO2 pump as a firefighting agent. One of these is the limited quantity available，and the other is（）.
What is best suited for fighting a fire in a ballast control room?（）
What is NOT a characteristic of carbon dioxide fire-extinguishing agents?（）
Under the regulations for cargo vessels，which statement is TRUE concerning fireman’s outfits?（）
What is an advantage of using foam in fire fighting?（）