[单项选择]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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[单项选择]设已经在菜单编辑器中设计了窗体的快捷菜单，其顶级菜单为Bt，取消其“可见”属性，运行时，在以下事件过程中，可以使快捷菜单相应鼠标右键菜单的是( )。

[单项选择]设已经在“菜单编辑器”中设计了窗体的快捷菜单，其顶级菜单为Bs，取消其“可见”属性，运行时，在以下事件过程中，可以使快捷菜单响应鼠标右键菜单的是
A. Private Sub Form_MouseDown(Button As Integer，Shift As Integer， X As Single，Y As Singl If Button=2 Then PopupMenu Bs，2 End Sub
B. Private Sub Form_Mouse Down(Button As Integer，Shift As Integer， X As Single，Y As Singl PopupMenu Bs End Sub
C. Private Sub Form_MouseDown(Button As Integer，Shift As Integer，_ X As Single，Y As Singl PopupMenu Bs，0 End Sub
D. Private Sub Form_MouseDown(Button As Integer，Shift As Integer，_ X As Single，Y As Singl If(Button=VbLeftBuaoOr(Button=VbRighButtoThen PopupMenu Bs End Sub

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[单项选择]设在菜单编辑器中定义了一个菜单项，名为menul为了在运行时隐藏该菜单项，应使用的语句是
A. menuEnabled=Tme
B. menuEnabled=False
C. menuVisible=True
D. menuVisible=False

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