A.不良率較低 B.情況變好 C.不穩(wěn)定 D.最理想
A.0.35% B.1% C.0.135% D.0.27%
A.缺點(diǎn)數(shù)就是不良品數(shù) B.缺點(diǎn)數(shù)不小于不良品數(shù) C.缺點(diǎn)數(shù)不大于良品數(shù) D.皆不正確