141. 內圓孔銼削時,銼刀的半徑須比內圓孔半徑?
(A)稍小
(B)小一倍
(C)稍大
(D)相等
答案:登入後查看
統計: A(2), B(0), C(0), D(0), E(0) #2900210
統計: A(2), B(0), C(0), D(0), E(0) #2900210