单项选择题
布局类型为一对多的报表,一般适用于打印( )。
A. 1,1,2
B. 2,2,1
C. 2,2,2
D. 2,2,3
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单项选择题
关系运算中花费时间可能最长的运算是( )。
A. Private Sub Form _ Mouse Up(Button As Integer,Shift AS Integer,_ X As Single,Y As Single) If Button=2 Then PopupMenu mnuEdit,vbPopupMenuCenterAlign Or_ vbPopupMenuRightButton,X,Y,mnuEditOpen End If End Sub
B. Private Sub Form _ MouseUp(Button AS Integer,Shift AS Integer,_ X As Single,Y As Single) If Button=2 Then PopupMenu mnuEdit, End If End Sub
C. Private Sub Form _ MouseUp(Button AS Integer,Shift AS Integer,_ X As Single,Y As Single) PopupMenu mnuEdit,vbPopupMenuCenterAlign Or_ vbPopupMenuRightButton End Sub
D. Private SUb Form _ MouseUp(Button AS Integer,_ Shift As Integer,X As Single,Y As Single) If Button=2 Then PopupMenu mnuEdit,2 End If End Sub
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单项选择题
从“订单”表中删除签订日期为 2004 年 1 月 10 日之前(含)的订单记录,正确的 SQL语句是______。
A.DROP FROM 订单 WHERE 签订日期<={^2004-l-10}
B.DROP FROM 订单 FOR 签订日期<={^2004-l-l0}
C.DELETE FROM 订单 WHERE 签订日期<={^2004-1-10}
D.DELETE FROM 订单 FOR 签订日期<={^2004-l-10}
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