单项选择题
A.APPEND BLANKB.REPLACEC.BROWSED.DELETE ALL
A.X$Y . AND . (X==Y). OR .(“X”$”SJKXY”)B.X+Y $”10220089” . AND . . NOT . X<>YC.. NOT . X$Y . AND . . NOT . X=YD.. NOT . Y-X=”98”
A.20/4-2B.”计算机专业”$”计算机”C.”01/12/98”<”12/30/97”D.”四”=”四川”
A.80个B.254个C.256个D.120个
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