A.必須進(jìn)行編輯后才會(huì)發(fā)生變化 B.會(huì)發(fā)生變化,但與數(shù)據(jù)無關(guān) C.不會(huì)產(chǎn)生變化 D.會(huì)產(chǎn)生相應(yīng)的變化
A.算術(shù)運(yùn)算符、文本連接符、引用運(yùn)算符、比較運(yùn)算符 B.比較運(yùn)算符、文本運(yùn)算符、算數(shù)運(yùn)算符、引用運(yùn)算符 C.引用運(yùn)算符、算數(shù)運(yùn)算符、文本運(yùn)算符、比較運(yùn)算符 D.文本運(yùn)算符、引用運(yùn)算符、算數(shù)運(yùn)算符、比較運(yùn)算符
A.篩選 B.分類匯總 C.排序 D.合并計(jì)算