单项选择题
A.X=Y B.X==Y C.X$Y D.AT(X,Y)=0
执行以下命令序列显示的DT值为()
A.06 B.99 C.20 D.6
A.SAVE ALL LIKE ??M? TO ST B.SAVE ALL LIKE **M* TO ST C.SAVE ALL EXCEPT ??M? TO ST D.SAVE ALL LIKE ??M* TO ST
A.scatter to B.gather from C.copy to D.append from
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