制图时常用中粗实线线宽（）_精华吧

制图时常用中粗实线线宽（）

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制图时常用中粗实线线宽（）

A.1.5b

B.1b

C.0.7b

D.0.25b

正确答案：0.7b

Tag：画法几何及土木工程制图实线时间：2022-02-17 20:46:17

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