The first the Second Mate knew of the fire was the sounding of the emergency alarm，which had been（）from the engine room.<br>A:acted<br>B:activated<br>C:actioned<br>D:enactioned

The first the Second Mate knew of the fire was the sounding of the emergency alarm，which had been（）from the engine room.
A:acted
B:activated
C:actioned
D:enactioned

出自：海船船员证

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