单选题（），as the chemical extinguisher agent，should be used for an electric fire.Adry chemical or foamBfoam or soda acidCcarbon dioxide or foamDcarbon dioxide or dry chemical
单选题
（），as the chemical extinguisher agent，should be used for an electric fire.
A
dry chemical or foam
B
foam or soda acid
C
carbon dioxide or foam
D
carbon dioxide or dry chemical
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