问答题
A.{^2002-05-30}-20B.CTOD(“05/30/02”)C.”23”+”2”D.LEN(“ABCD”)-2
A.2B.-2C.1/2D.-1/2
A.4B.-4C.3D.-3
A.{1,2,3}B.{1,2,2,3,3,3,4,4,4}C.{1,2,2,3,3,3}D.[1,2,2,3,3,3,4,4,4]
A.1/2B.1/4C.1/3D.1/6