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【单选题】
为了确保国家标准的时效性，需要对标准进行复审，复审后修订的国家标准(39)。(40)标准是国际标准化组织中质量管理和质量保证技术委员会制定的所有标准。企业生产的产品已有国家标准，而企业制定国家标准的标准，该标准在(41)适用。(42)表示推荐性地方标准代号。A.
代号改变
B.
顺序号改变
C.
编码改变
D.
年号改变
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