问题
填空题
质量评定的目的有三个：一是鉴别（）；二是预防（）的产生；三是要为（）和改进提供有用的信息。
答案
参考答案：质量的等级；质量缺陷；质量维持
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质量评定的目的有三个：一是鉴别（）；二是预防（）的产生；三是要为（）和改进提供有用的信息。
参考答案：质量的等级；质量缺陷；质量维持
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