An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.<br>A:lack of toxicity<br>B:the multipurpose extinguishing ability<br>C:burn-back protection<br>D:cooling ability

An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.
A:lack of toxicity
B:the multipurpose extinguishing ability
C:burn-back protection
D:cooling ability

出自：海船船员证

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