Foam-type portable fire extinguishers are more usefull in combating fires involving（）.<br>A:solid materials such as wood or bales of fiber<br>B:inflammable liquids<br>C:electrical equipment<br>D:metallic solids

Foam-type portable fire extinguishers are more usefull in combating fires involving（）.
A:solid materials such as wood or bales of fiber
B:inflammable liquids
C:electrical equipment
D:metallic solids

出自：海船船员证

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