A.private sub Command1_Click() Command2.Visible=true Command3.Visible=false
B.private sub Command1_Click() Command2.Enable=true Command3.Enable=false
C.private sub Command1_Click() Command2.Enable=true Command3.Visible=false
D.private sub Command1_Click() Command2.Visible=True Command3.Enable=False
答案不对?请尝试站内搜索