問題詳情
1. 有關繪製機械工作圖中零件之尺寸標註，下列何者是屬於雙向公差？
(A) 30m6
(B) 30E5
(C) 30J7
(D) 30f7
(A) 30m6
(B) 30E5
(C) 30J7
(D) 30f7
參考答案
無參考答案
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