窗体中有3个命令按钮，分别命名为Command1、Command2和Command3。当单击Command1按钮时，Command2按钮变为可用，Command3按钮变为不可见。下列Command1的单击事件过程中，正确的是

A:Private sub Command 1_Click() Command2.Visible=True Command3.Visible=False End Sub B:Private sub Command1_Click() Command2.Enable=True Command3.Enable=False End Sub C:Private sub Command1_Click() Command2.Enable=True Command3.Visible=False End Sub D:Private sub Command1_Click() Command2.Visible=True Command3.Enable=False End Sub

Which command is used to create a database file that it's structure is same as another one's in FoxPro DBMS ( )

A:CREATE B:COPY C:APPEND D:INSERT

窗体上添加有3个命令按钮，分别命名为Command1、Command2和Command3，编写Command1的单击事件过程，完成的功能为：当单击按钮Command1时，按钮 Command2可用，按钮Command3不可见。以下事件过程中正确的是( )。

A:Private Sub Command1 Click( ) Command2．Visible=True Command3．Visible=False End Sub B:Private Sub Command1 Click( ) Command2．Enabled=True Command3．Visible=False End Sub C:Private Sub Command1_Click( ) Command2．Enabled=True Command3．Visible=False End Sub D:Private Sub Command1_Click( ) Command2．Visible=True Command3．Enabled=False End Sub

窗体上添加有3个命令按钮，分别命名为Command1、Command2和Command3，编写Command1的单击事件过程，完成的功能为：当单击按钮Command1时，按钮Command2可用，按钮Command3不可见。下列程序中正确的是( )。

A:Private Sub Command1 Click() Command2.Visible=True Command3.Visible=False End Sub B:Private Sub Command1 Click() Command2.Enabled=True Command3.Visible=False End Sub C:Private Sub Command1_Click() Command2.Enabled=True Command3.VSible=False End Sub D:Private Sub Command1_Click() Command2.Visible=True Command3.Enabled=False End Sub

窗体上添加有3个命令按钮，分别命名为Command1、Command2和Command3，编写Command1的单击事件过程，完成的功能为：当单击按钮Command1时，按钮 Command2可用，按钮Command3不可见。以下事件过程中正确的是( )。

A:Private Sub Command 1 Click() Command2.Visible＝True Command3.Visible＝False End Sub B:Private Sub Command1 Click() Command2.Enabled＝True Command3.Visible＝False End Sub C:Private Sub Command1_Click() Command2.Enabled＝True Command3.Visible＝False End Sub D:Private Sub Command1 Click() Command2.Visible＝True Command3.Enabled＝False End Sub

窗体上添加有3个命令按钮，分别命名为．Command1、Command2和Command3。编写Command1的单击事件过程，完成的功能为：当单击按钮Command1时，按钮Command2可用，按钮Command3不可见。以下正确的是( )。

A:Private Sub Command1_C1ick() Command2.Visible=Tme Command3.Visible=False EndSub B:Private Sub Command1 Click() Command2.Enabled=Tme Command3.Enabled=False EndSub C:Private Sub Command1_C1ick() Command2.Enabled=True Command3.Visible=False End Sub D:Private Sub Command1_Click() Command2.Visible=True Command3.Enabled=False End Sub

窗体上添加有 3 个命令按钮，分别命名为 Command1、Command2 和 Command3。编写 Command1 的单击事件过程，完成的功能为：当单击按钮 Command1 时，按钮Command2 可用，按钮 Command3 不可见。以下正确的是______。

A:Private Sub Command1_Click() Command2.Visible=True Command3.Visible=False End Sub B:Private Sub Command1_Click() Command2.Enabled=True Command3.Enabled=False End Sub C:Private Sub Command1_Click() Command2.Enabled=True Command3.Visible=False End Sub D:Private Sub Command1_Click() Command2.Visible=True Command3.Enabled=False End Sub

窗体上添加有3个命令按钮，分别命名为Command1、Command2和Command3，编写Command1的单击事件过程，完成的功能为：当单击按钮Command1时，按钮Command2可用，按钮Command3不可见。以下正确的是( )。

A:Private Sub Command1 Click() Command2.Visible=True Command3.Visible=False End Sub B:Private Sub Command1 Click() Command2.Enabled=True Command3.Visible=False End Sub C:Private Sub Command1_Click() Command2.Enabled=True Command3.Visible=False End Sub D:Private Sub Command1_C1ick() Command2.Visible=True Command3.Enabled=False End Sub

窗体上添加有 3 个命令按钮，分别命名为 Command1、Command2 和 Command3。编写 Command1 的单击事件过程，完成的功能为：当单击按钮 Command1 时，按钮Command2 可用，按钮 Command3 不可见。以下正确的是______。

A:Private Sub Command1_Click() Command2.Visible=True Command3.Visible=False End Sub B:Private Sub Command1_Click() Command2.Enabled=True Command3.Enabled=False End Sub C:Private Sub Command1_Click() Command2.Enabled=True Command3.Visible=False End Sub D:Private Sub Command1_Click() Command2.Visible=True Command3.Enabled=False End Sub