按等流时线原理,当净雨历时tc=τm(流域汇流时间)时,全部流域面积与部分净雨参与形成最大洪峰流量。
设在窗体上有一个名称为Commandl的命令按扭和一个名称为Textl的文本框。要求单击Commandl按钮时可把光标移到文本框中。下面正确的事件过程是。 A.Private Sub Commandl_Click B.Private Sub Commandl_Click Textl.GotFocus Commandl.GotFocus End Sub End Sub C.Private Sub Commandl_Click D.Private Sub Commandl_Click Textl.SetFocus Commandl.SetFocus End Sub End sub
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假定有如下的Sub过程:Sub Sub1(x As Single, y As single)t=xx=t / yy=t Mod yEnd Sub在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_Click()Dim a As SingleDim b As Singlea=5b=4Sub1 a,bPrint a;bEnd Sub程序运行后,单击命令按钮,输出结果为A.54B.] 1]]1C.] 1.2]]5.4D.] 1.25]]1
有如下程序。 Private Sub Commandl_Click() Dim a As Single Dim b As Single a=5:b=4 Call Sub1 ( a,B)End Sub Sub Subl(x As Single, y As Single) t=x x=t\y y = t Mod y End Sub 在调用运行上述程序后,a和b的值分别为A.0 0B.1 1C.2D.1 2
假定有如下的Sub过程:Sub Sub1 (x As Single, y As Single) t=x x = t/y y = t Mod yEnd Sub 在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_ Click() Dim a As Single Dim b As Single a = 5 b = 4 Sub1 a, b Print a; b End Sub 程序运行后,单击命令按钮,输出结果为______。A.5 4B.1 1C.1.2 5.4D.1.25 1
有如下Sub过程:Sub ind(a As Integer)Static x As Integerx= x + aPrint x:End Sub以下是调用它的事件过程,程序运行后,单击命令按纽Command1三次,输出结果为【 】。Private Sub Command1_Click()Ind 2End Sub
按等流时线原理,当净雨历时大于流域汇流时间时,流域上全部面积的部分净雨参与形成最大洪峰流量。
以下定义的过程()是按“传值”方式传递参数的。A、Public Sub Sum(x,y)B、Public Sub Sum(ByVal x, ByVal y)C、Public Sub Sum(x As Integer,y As Integer)D、Public Sub Sum(x%, y%)