根据《海关行政处罚实施条例》，“自用”指旅客或者收件人本人自用、馈赠亲友而非为出售或者出租。
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Although the main business of the shipowners may be that of brewers，in their capacity as shipowners they must（）by the standard of conduct of the ordinary reasonable Shipowner in the management and control of vessels.
A. judge
B. be judging
C. be judged
D. have judged
下列不是质量环三要素是（）
A. 检查
B. 分析
C. 统计评定
D. 排除
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