問題詳情
22 工程圖形中有一螺紋之尺寸標註為「L 2N M6×0.75」，其中「2N」之意義為：
(A)螺紋有 2 處
(B)螺紋節距為 2 mm
(C)螺紋線數為 2
(D)螺紋之公差等級為 2N
(A)螺紋有 2 處
(B)螺紋節距為 2 mm
(C)螺紋線數為 2
(D)螺紋之公差等級為 2N
參考答案
答案：C
難度：非常簡單0.934066
統計：A(1),B(3),C(85),D(2),E(0)
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