单项选择题
You are creating a multiple document interface （ MDI） application by using the .NET Framework 3.5 . You configure the frmParent form to be an MDI parent.You write the following code segment （Line numbers are included for reference only.）
You need to associate and display the frmChild form and the frmParent form.
Which code segment should you add？（）
A.A
B.B
C.C
D.D
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单项选择题
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单项选择题
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单项选择题
You are creating a Windows Forms application by using the .NET Framework 3.5 The application requires a form to display a clock.You need to create a circular form to display the clock. Which code segment should you use？（）
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