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

2.單項選擇題Fire hose should be washed with（）.

A.salt water and a wire brush
B.caustic soap
C.mild soap and fresh water
D.a holystone

3.單項選擇題Halon fire extinguishers are NOT effective when used on which types of fires?（）

A.Fires in electrical equipment
B.Flammable oils and greases
C.Class A fires in ordinary combustibles
D.Materials containing their own oxygen

4.單項選擇題Gas masks（）.

A.should be worn while fighting a fire
B.can be used in atmospheres deficient in oxygen
C.filter contaminants from air that is to be breathed
D.may be substituted for a self-contained breathing apparatus

5.單項選擇題Control valves of a CO2 system may be located within the protected space when（）.

A.it is impractical to locate them outside
B.there is also a control valve outside
C.the CO2 cylinders are also in the space
D.an automatic heat-sensing trip is installed

6.單項選擇題Fusible-link fire dampers are operated by（）.

A.8the heat of a fire melting the link
B.a break-glass and pull-cable system
C.electrical controls on the bridge
D.a mechanical arm outside the vent duct

7.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

8.單項選擇題Halon extinguishes fire primarily by（）.

A.cooling
B.smothering
C.shielding of radiant heat
D.breaking the chain reaction

9.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

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