A.專檢、抽檢、出廠檢 B.送檢、專檢、抽檢 C.自檢、互檢、專檢 D.專檢、出廠檢、送檢
A.無退扭 B.有退扭 C.半退扭 D.有預(yù)扭
A.降低填充系數(shù) B.減小延伸系數(shù) C.提高填充系數(shù) D.改善調(diào)整系數(shù)