A.WaterB.FoamC.Dry chemicalD.Carbon DioxideWhich fire e……

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

单项选择题Which extinguishing agent is recommended in the Chemical Data Guide for use on a carbon disulfide fire?（）

A.Alcohol foam
B.Dry chemical
C.Chemical foam
D.Water fog

单项选择题Which extinguishing agent is NOT recommended in the Chemical Data Guide for use on a cyclohexane fire?（）

A.Foam
B.Carbon dioxide
C.Dry chemical
D.Water fog