A.4 B.8 C.12 D.16
A.2.309 B.1.4785 C.1.451 D.1.814
A.程序錯誤 B.沒有正確安裝螺紋刀具 C.切削參數(shù)不合理 D.絲杠螺距補(bǔ)償數(shù)據(jù)不正確