A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.<br>A:generators<br>B:oil drums<br>C:the bridge controls<br>D:combustible metals

A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.
A:generators
B:oil drums
C:the bridge controls
D:combustible metals

出自：海船船员证

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