A.” B.’ C.* D.~
A.“$” B.“@” C.“#” D.“^”
A.邏輯函數(shù) B.統(tǒng)計(jì)函數(shù) C.賬務(wù)函數(shù) D.數(shù)據(jù)庫(kù)函數(shù)