问题

Oil fires are best extinguished by（）.

Acutting off the supply of oxygen
Bremoving the fuel
Ccooling below the ignition temperature
Dspraying with water

参考答案

参考解析：

分类：海上救助题库

Class B fires are best extinguished by smothering, i-e（）.Adeprival of oxygenBremoval of heatCspraying of waterDinjecting of soda-acid

2、CO2 extinguishes a fire by （）.

CO2 extinguishes a fire by （）.Aa blanket of bubbles formed on the surface of the fireBsmotheringCcoolingDisolating the heat from the fuel

3、How does foam extinguish an oil fire?（

How does foam extinguish an oil fire?（）ABy cooling the oil below the ignition temperatureBBy removing the fuel source from the fireCBy excluding the oxygen from the fireDBy increasing the weight of the oil

4、Foam extinguishes a fire by（）.

Foam extinguishes a fire by（）.Asmothering the burning materialBchemical combination with burning materialCabsorbing the burning materialDorganic destruction of the burning material

5、Halon extinguishes a fire by（）.

Halon extinguishes a fire by（）.Abreaking the chain reactionBsmothering the fireCcooling the fireDcoating the fuel with a nonflammable surface

6、Foam extinguishes a fire by（）.

Foam extinguishes a fire by（）.Ashutting off the air supplyBcooling the fuel to below ignition temperatureCdispersing the fuelDremoving the source of ignitio

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