The spread of fire is NOT prevented by（）.<br>A:shutting off the oxygen supply<br>B:cooling surfaces adjacent to the fire<br>C:removing combustibles from the endangered area<br>D:removing smoke and toxic gases by ensuring adequate ventilation

The spread of fire is NOT prevented by（）.
A:shutting off the oxygen supply
B:cooling surfaces adjacent to the fire
C:removing combustibles from the endangered area
D:removing smoke and toxic gases by ensuring adequate ventilation

出自：海船船员证

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