“DB/T”表示（）A推荐性地方标准代号B强制性地方标准代号C推荐性行业标准代号D推荐性国际标准代号
“DB/T”表示（）
A推荐性地方标准代号
B强制性地方标准代号
C推荐性行业标准代号
D推荐性国际标准代号
参考解析
略
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