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【单选题】
下列关于件号标注描述错误的是:
A.
件号标注有件号数字、件号线和引线三部分组成
B.
件号字高尺寸为3.5号
C.
件号线和引线均为细实线
D.
引线应由所表示的零件或部件轮廓线内引出
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