EAN-13码的编码必须遵循()原则。

答案查看网，轻松搜题/搜资源

【单选题】【消耗次数：1】

EAN-13码的编码必须遵循()原则。

① 标准性、唯一性、简明性

② 通用性、可扩展性、永久性

③ 唯一性、永久性、无含义

④ 唯一性、不变性、标准性

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