有一线性系统,其输入分别为u1(t)和u2(t)时,输出分别为y1(t)和y2(t)。当输入为a1u1(t)+a2u2(t)时(a1,a2为常数),输出应为()A、a1y1(t)+y2(t)B、a1y1(t)+a2y2(t)C、a1y1(t)-a2y2(t)D、y1(t)+a2y2(t)

有一线性系统,其输入分别为u1(t)和u2(t)时,输出分别为y1(t)和y2(t)。当输入为a1u1(t)+a2u2(t)时(a1,a2为常数),输出应为()

  • A、a1y1(t)+y2(t)
  • B、a1y1(t)+a2y2(t)
  • C、a1y1(t)-a2y2(t)
  • D、y1(t)+a2y2(t)

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有一过程如下:Sub Sub1(m As Integer,total As Long)Dim i As Integertotal=1For i=1 To mtotal=total*iNextEnd Sub调用它的事件过程如下:Private Sub Command1_Click()Dim tot As Long,a As Integera=Val(InputBox("请输入数据"))Call Sub1(a,tot)Print totEnd Sub则输入数据5,运行结果为【 】。

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