Which one is not important for your safety on board ship?（）<br>A:know where the lifejacket is stowed<br>B:know where the life-saving craft are fitted on the ship<br>C:know the escape routes<br>D:Good professional knowledge

Which one is not important for your safety on board ship?（）
A:know where the lifejacket is stowed
B:know where the life-saving craft are fitted on the ship
C:know the escape routes
D:Good professional knowledge

出自：海船船员证

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