单项选择题
The abandon ship signal sounded by the vessels whistle is （）.
A.6 short blasts and 1 long blast
B.long blast mare than 6 short blasts
C.more than 6 short blasts and 1 long blast
D.1 long blast of at least 10 seconds
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If you have to abandon ship and enter a life-raft, your main course of action should be （）.
A.remain in the vicinity of the vessel
B.head for the closest land
C.head for the closest sea-lanes
D.get a majority opinion -
单项选择题
In the first 24 hours after abandoning a vessel, water should be given only to personnel who are（）.
A.thirsty
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D.awake -
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