A.STORE 1 TO X,Y B.STORE 1,2 TO X C.STORE 1 TO X Y D.STORE 1,2 TO X
A.AT("A","BCD") B."[信息]"$"管理信息系統(tǒng)" C.ISNULL(.NULL.) D.SUBSTR("計(jì)算機(jī)技術(shù)",3,2)
A.N B.C C.10 D.X