下列哪項(xiàng)工作不屬于問(wèn)題管理的職責(zé)? ()A.消除錯(cuò)誤的根本原因B.對(duì)問(wèn)題調(diào)查和診斷C.提出變更請(qǐng)求D.維護(hù)問(wèn)題(含已知錯(cuò)誤)數(shù)據(jù)庫(kù)