A.int(rnd*20+30) B.int(rnd*21+30) C.int(rnd*31+20) D.int(rnd*50)
A.面向?qū)ο蟮某绦蛟O(shè)計(jì)方法B.開放數(shù)據(jù)庫(kù)接口C.圖形設(shè)備接口D.圖形用戶界面
A.DATE() B.NOW() C.TIME() D.DAY()