On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）<br>A:Carbon dioxide<br>B:Water (stored pressure)<br>C:Dry chemical<br>D:Foam

On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）
A:Carbon dioxide
B:Water (stored pressure)
C:Dry chemical
D:Foam

出自：海船船员证

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