题目内容
For both brand neutral and unlicensed neutral, the country of production is not indicated on the commodity and internal and external packaging.()
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Indicative signs are represented by figures or words.( )
There are two kinds of bar codes commonly used in the world: UPC and EAN. UPC code is an internationally recognized item coding and identification system.（）
央行票据本质上是中央银行的负债，因此，中央银行发行央行票据的主要目的是为了央行融资。
关于事务的故障与恢复，下列描述中正确的是（）
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