While doing quality inspection，few defects were identified in the product．After rectifying the defects，the repaired items were reinspected and accepted．Subsequently，a notification was issued，which can also be referred to as （）．

A．validated defect repair

B．product acceptance

C．quality audit

D．approved change request

企业以表示某些方面的独到之处为主要竞争手段，希望在与竞争对手的差异比较中占有优势地位，因此便形成了（）竞争战略。

A.高质量竞争战略

B.差异优势竞争战略

C.低成本竞争战略

D.集中优势战略