Any extinguishing agent used on a Class C fire must have which important property?（）<br>A:Cooling ability<br>B:Leaves no residue<br>C:Penetrating power<br>D:Nonconductivity

Any extinguishing agent used on a Class C fire must have which important property?（）
A:Cooling ability
B:Leaves no residue
C:Penetrating power
D:Nonconductivity

出自：海船船员证

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