Which fire extinguishing agent can NOT be used on an ethylenediamine?（）

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

单项选择题Which extinguishing agent is most effective on a mattress fire?（）

A.CO₂
B.Foam
C.Dry Chemical
D.Water