A.2級B.3級C.4級D.5級
A.統(tǒng)計(jì)分析、低缺陷B.統(tǒng)計(jì)分析、零缺陷C.質(zhì)量流程、零缺陷D.質(zhì)量流程、低缺陷
A.0.27%B.69%C.99.73%D.68%