单项选择题
Which of the fire extinguishing agents listed is the safest to use when combating a class C fire?（）
A.CO2
B.Foam
C.Water fog
D.Soda acid
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相关考题
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单项选择题
Which of the following represents the emergency signal for fire aboard ship?（）
A.More than six short blasts and one long blast on the whistle
B.Continuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarm
C.Three short blasts of the whistle supplemented by the same signal on the general alarm
D.More than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm -
单项选择题
To extinguish an electrical fire, you should use （）.
A.mechanical foam
B.chemical foam
C.carbon dioxide
D.soda acid -
单项选择题
If a CO2 fire extinguisher is not readily available, which of the listed fire extinguishers would be best suited to combat a small electrical fire in a switchboard?（）
A.Dry chemical
B.Halon
C.Low velocity fog
D.Steam
