单项选择题
Which fire extinguishing agent has the greatest capacity for absorbing heat?（）
A.Water
B.Foam
C.Dry chemical
D.Carbon Dioxide
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相关考题
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单项选择题
Which fire extinguishing agent can NOT be used on an ethylenediamine?（）
A.Water foam
B.Dry chemical powder
C.Water fog
D.Alcohol foam -
单项选择题
Which fire detection system is actuated by sensing a heat rise in a compartment?（）
A.Manual fire detection system
B.Automatic fire detection system
C.Smoke detection system
D.Watchman's supervisory system -
单项选择题
Which extinguishing agent is the best for use on electrical fires?（）
A.Foam
B.CO2
C.Dry chemical
D.Water fog
