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【判断题】
条形码简称条码,是由一组黑白相间、粗细不同的条状符号组成,主要用以表示商品的名称、产地、价格、种类等,是全世界通用的商品代码的表示方法。A.
正确
B.
错误
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A.
beneficial
B.
benefit
C.
substantial
D.
substance
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