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22.在模具製作加工中,「線切割放電加工機(WEDM)」為常用之機械,其線電極材料通常採用下列何者?(A)黃銅和純銅(B)碳化硼(C)鎢鋼(D)合金鋼
問題詳情
22.在模具製作加工中,「線切割放電加工機(WEDM)」為常用之機械,其線電極材料通常採用下列何者?
(A)黃銅和純銅
(B)碳化硼
(C)鎢鋼
(D)合金鋼
參考答案
答案:A
難度:簡單0.761905
統計:A(192),B(13),C(37),D(10),E(0)
上一篇 :
26.我國國家標準之「表面粗糙度值」是採用下列何者?(A) Rmax(最大粗糙度) (B) Ra(中心線平均粗糙度)(C) Rz(十點平均粗糙度) (D) Rmin(最小平均粗糙度)
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31.凸輪運動中,「簡諧運動」的從動件在上升時,其速度最大是在總升程的哪一段?(A)起始點(B)中間點(C)終點(D)不一定
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