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单选题

_____directly affect the fitness健康 and ability of a seafarer to perform watchkeeping duties. A. Smoking B. Drug (药物)and alcohol (酒精)abuse C. Fruit D. Vegetables

Aa

Bb

Cc

Dd

正确答案:A (备注:此答案有误)

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  • 单选题

    _____directly affect the fitness健康 and ability of a seafarer to perform watchkeeping duties. A. Smoking B. Drug (药物)and alcohol (酒精)abuseC. Fruit D. Vegetables

    答案解析

  • 填空题

    affect()

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