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【单选题】
按照应变部署放一艘艇时由_______负责检查和指挥,同时放几艘艇时由_______负责检查和指挥。
A.
大副和水手长/各艇艇长
B.
三副/大副和三副
C.
大副/大副三副
D.
大副和水手长/大副和水手长
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【单选题】We’ve known for a long time a high—fat diet，obesity and lack of exercise can increase the risk of developing heart disease and type 2 diabetes，two conditions affecting millions of Americans．What we ar...
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