A fire is considered "under control" when （）.<br>A:all hands are at their fire stations<br>B:all fire-fighting equipment is at the scene<br>C:the fixed systems are activated<br>D:the fire is contained and no longer spreading

A fire is considered "under control" when （）.
A:all hands are at their fire stations
B:all fire-fighting equipment is at the scene
C:the fixed systems are activated
D:the fire is contained and no longer spreading

出自：海船船员证

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