單項選擇題Accumulations of oily rags should be().

A.kept in nonmetal containers
B.discarded as soon as possible
C.cleaned thoroughly for reuse
D.kept in the paint locker


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1.單項選擇題Flames from small leaks of LFG may be extinguished by().

A.utilizing carbon dioxide or dry chemical fire extinguishers
B.utilizing soda and acid fire extinguishers
C.blowing the flames out
D.letting it burn itself out

2.單項選擇題Halon extinguishes a fire by().

A.breaking the chain reaction
B.smothering the fire
C.cooling the fire
D.coating the fuel with a nonflammable surface

3.單項選擇題Generally,the first action in extinguishing an LFG fire caused by escaping gas is to().

A.sweep flames away with water spray
B.shut off the leak
C.use a chemical foam fire extinguisher
D.call the local fire department

4.單項選擇題Foam extinguishes a fire by().

A.smothering the burning material
B.chemical combination with burning material
C.absorbing the burning material
D.organic destruction of the burning material

5.單項選擇題Good housekeeping on a vessel prevents fires by().

A.allowing better access in an emergency
B.eliminating potential fuel sources
C.eliminating trip hazards
D.improving personnel qualifications

6.單項選擇題Foam extinguishes a fire by().

A.shutting off the air supply
B.cooling the fuel to below ignition temperature
C.dispersing the fuel
D.removing the source of ignition

7.單項選擇題CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when().

A.the discharge valve is open
B.the control box glass is broken
C.pressure from the control cylinders is detected
D.the control cylinders have been completely discharged

8.單項選擇題How is the external flotation bladder of an immersion suit inflated?()

A.It is inflated by a small CO2 bottle that is automatically tripped when the front zipper is at the top of the zipper track
B.It is inflated by a small CO2 bottle that is manually tripped
C.It is inflated by blowing through an inflation tube
D.It inflates by sea water bleeding into the flotation bladder and reacting with a chemical therein

9.單項選擇題Fire may be spread by which means?().

A.Conduction of heat to adjacent surfaces
B.Direct radiation
C.Convection
D.All of the above

10.單項選擇題How does foam extinguish an oil fire?().

A.By cooling the oil below the ignition temperature
B.By removing the fuel source from the fire
C.By excluding the oxygen from the fire
D.By increasing the weight of the oil