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
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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
