Once a scavenge fire is detected the engine （）.<br>A:will be speeded up<br>B:should be slowed down<br>C:must slow down<br>D:have to be slow down

Once a scavenge fire is detected the engine （）.
A:will be speeded up
B:should be slowed down
C:must slow down
D:have to be slow down

出自：海船船员证

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