下列程序运行后,单击命令按钮,窗体显示的结果为()。Private Function pl(x As Integer,y As Integ

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下列程序运行后,单击命令按钮,窗体显示的结果为( )。 Private Function pl(x As Integer,y As Integer,z As Integer) pl=2*x+y+3*z End Function Private Function p2(X As Integer,y As Integer,z As Integer) p2=p1(z,y,x)+x End Function Private Sub Commandl_Click()

A.23

B.19

C.21

D.22

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