单项选择题

要使菜单项MenuOne在程序运行时失效,使用的语句是

A.MenuOneVisible=True
B.MenuOneVisible=False
C.MenuOne.Enabled=True
D.MenuOne.Enabled=False
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单项选择题
下列代码运行后输出结果是 Defstr B-E Private Sub Command1_Click() B$= 123 C= 456 Print B+C$ End Sub
A.123456
B."123456"
C.123+"456"
D.显示出错信
单项选择题
设已经在菜单编辑器中设计了窗体的快捷菜单,某顶级菜单为a1,且取消其“可见”属性。运行时,哪个事件过程可以使快捷菜单的菜单项响应鼠标左键单击和右健单击的事件过程是
A.Private Sub Form_MouseDown(Button As Integer,Shift As Integer,_X As Single,Y As Single)   If Button=2 Then PopupMenu al,2  End Sub
B.Private Sub Form_MouseDown(Button As Integer,Shift As Integer,_X As Single,Y As Single   PopupMenu al,0  End Sub
C.Private Sub Form_MouseDown(Button As Integer,Shift As Integer,_X As Single,Y As Single   PopupMenu al  End Sub
D.Private Sub Form MouseDown(Button As Integer,Shift As Integer,_X As Single,Y As Single   If(Button=vbLetfButton)Or(Button=vbRightButton)Then PopupMenu al  End Sub
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