單項選擇題The three basic elements necessary for any fire are （）.

A.heat, gas, and flames
B.fuel, heat, and oxygen
C.heat, nitrogen, and fuel
D.fuel oil, nitrogen, and oxygen


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2.單項選擇題If a fire occurs in the boiler room as a result of a leaking fuel line, you should FIRST （）.

A.notify the engineer on watch
B.isolate and secure the piping
C.throw sand on the fire
D.extinguish the fire using a combination nozzle with applicator

3.單項選擇題The four basic components of a fire are chain reaction, heat, fuel, and （）.

A.carbon monoxide
B.oxygen
C.carbon dioxide
D.any gaseous substance

4.單項選擇題The FIRST step to take in fighting an engine room fire resulting from a ruptured fuel oil service line, is to （）.

A.evacuate all engine room personnel
B.fight the fire with hand portable extinguishers
C.activate the main CO2 bank
D.stop the flow of leaking fuel oil

5.單項選擇題The four basic components of a fire are fuel, heat, oxygen and a chain reactionWhich of the following statements best describes what must be eliminated to extinguish a fire?（）

A.Any one component can be eliminated to extinguish a fire
B.Any two components must be eliminated to properly extinguish a fire
C.Any three components must be eliminated to properly extinguish a fire
D.Ali four components must be eliminated to extinguish any fire