简述降雨历时t、地面集水时间t1及折减系数m引入的原因。

简述降雨历时t、地面集水时间t1及折减系数m引入的原因。


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有计算雨水管渠的设计流量时,应选用( )。A.降雨历时小于流域的集水时间时所对应的暴雨强度B.降雨历时等于流域的集水时间时所对应的暴雨强度C.降雨历时大于流域的集水时间时所对应的暴雨强度D.降雨历时小于或等于流域的集水时间时所对应的暴雨强度

左乳房内上象限扪及3cm×3cm肿块,质地偏硬,边界不太清楚,与皮肤胸肌无粘连;左腋下可扪及肿大淋巴结3个,质韧,约蚕豆大小,活动良好,病理证实乳房腺癌淋巴结转移,按TNM分期应为:A.T 1 N1 M0B.T 1 N 2 M 0C.T 1 2 N 1 M\sub 0D.T 1 2 N 2 M\sub 0E.T 13 N 1 M\sub 0

(12)有下列Sub过程: Sub Sub(x As Single,y As Single) t=x x=t/y y=t Mody End Sub 在窗体上的命令按钮Commandl中,编写下列事件过程,执行该事件过程调用Sun过程,结果是( )。 Private Sub Commandl_Click() Dim a As Single Dim b As Single a=5 b=4 Sun a,b Print a;b End Sub A.1.25 1 B.5 4 C.4 5 D.1 1.25

有如下SUB过程:Sub s(x As Single,y As Single)t=xx=t / yy=t Mod yEnd Sub在窗体上添加一个命令按钮,然后编写如下事件过程:Private Sub Form_Click()Dim a As SingleDim b As Singlea=5b=4s a,bPrint a,bEnd Sub则程序运行后,单击命令按钮,输出的结果为【 】 。

以下程序用于求S=1+3+32+33+…+310的值。Private Sub Commandl_Click()S=1T=1ForI=1 To 10T=______S=S+TNextIPrint"S=";SEnd Sub

有如下程序: Private Sub Command1_Click() Dim a As Single Dim b As Single a=5:b=4 Call Sub1(a,b) End Sub Sub Sub1(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.2 2D.1 2

有如下程序: Private Sub Commandl_Click() Dim a As Single Dim b As Single a=2:b=4 Call CS(a,b)End Sub Sub CS(x As Single,y As Single) t=X x=t\y y=t Mod y End Sub 程序运行后,单击命令按钮,a和b的值分别为A.0 0B.1 1C.0 2D.1 2

假定有如下的Sub过程: Sub Func(x As Single, y As Single) t=x x=t/y y=t Mod y End 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=6 b=5 Func(a, B) Print a, b End Sub 程序运行后,单击命令按钮,输出结果为 ______。A.6 5B.1 1C.1.2 5D.1.2 1

假定有如下的Sub过程: Sub S(x As Single,y As Single) t=x x=t/y y=t Mod y End 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=2 S a,b print a,b End Sub 程序运行后,单击命令按钮,输出结果是( )。A.5 2B.1 1C.1.25 4D.2.5 1

下面程序段,运行后的结果是 Private Sub Command1_Click() Dim b%(1 To 4),i%,t# For i=1 To 4 b(i) =i Next t=Tof(b() ) Print"t=";t, End Sub Function Tof(a() As Integer) Dim t#,i% t=1 For i=2 To UBound(a) t=t*a(i) Next Tof=t End FunctionA.t=18B.t=24C.t=30D.t=32

假定有如下的Sub过程: Sub sfun(x As Single,y As SinglE)t=x x=t/y y=t Mod y End Sub 在窗体上添加一个命令按钮(名为Command1),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 sfun a,b MsgBox a char(10A.1和1B. 1.25和1C. 1.25和4D. 5和4

编写如下事件过程: Private Sub Form_KeyDown (KeyCode As Integer,Shift As Integer) Print Chr(KeyCode) End Sub Private Sub Form_Key Press (KeyAscii As Integer) Print Chr (Key Ascii) End Sub 在一般情况下(即不按住Shift键和锁定大写键时)运行程序,若按“T”键,则程序输出的结果是A.T TB.t TC.T TD.t t

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.B.C.D.

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

现有如下Sub过程: Sub fun(x es single,y as single) t = x x = t/y y = t mod y End sub在窗体上添加命令按钮(cmD) ,编写如下事件过程: Private sub cmd_click( ) Dim a as single Dim b as single a = 5 b = 4 fun a, b Msgbox a chr(10) + chr(13) b End sub运行程序后,单击按钮,则在消息框中显示的内容为( )A.1和1B.1.25和1C.1.25和4D.5和4

有如下程序。Private Sub Command1_Click()Dim a As SingleDim b As Singlea=5: b=4Call Sub1(a, b)End SubSub Sub1(x As Single, y As Single)t=xx=t \ yy=t Mod yEnd Sub在调用运行上述程序后,a和b的值分别为A.0 0B.1 1C.2 2D.1 2

有如下程序: Private Sub Command1 Click() Dim a As Single Dim b As Single a=5:b=4 Call S(a,B)End Sub Sub S(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.2 2D.1 2

有如下Sub过程: Sub Sun(x As Single, y As Single) t=x x=t/y y=t Mod y End Sub 在窗体上的命令按钮Command1中,编写如下事件过程,执行该事件过程调用Sun过程,结果为( )。 Private Sub Command1_Click() Dim a As Single Dim b As Single a=5 b=4 Sun a, b Print a; b End SubA.1.25 1B.5 4C.4 5D.1 1.25

有下列Sub过程:Sub Sun(x As Single,y As Single)t=xx=t/yy=t ModyEnd Sub在窗体上的命令按钮Command1中,编写下列事件过程,执行该事件过程调用Sun过程,结果是( )。Private Sub Conunandl Cliek()Dim a As SingleDim b As Singlea=5b=4Sun a,bPrint a;bEnd SubA.1.25 1B.5 4C.4 5D.1 1.25

关于地面集水时间说法错误的是( )。A.地面集水时间受地形坡度、地面铺砌、地面植被等因素的影响B.地面集水时间是指雨水从汇水面积上最远点流到第一个雨水口的时间C.地面集水时间与降雨历时有关D.地面集水时间与暴雨强度有关

以下关于雨水管渠降雨历时计算的叙述中,哪几项错误?( )A.地面集水距离的合理范围是50~150mB.影响地面集水时间的主要因素有地面坡度、地面覆盖、降雨强度和地面集水距离C.降雨历时计算公式中采用折减系数,主要考虑地面坡度对地面径流集水时间影响的修正D.管渠内雨水流行时间一般采用5~15min

雨水管渠的设计降雨历时t,由地面降水时间t1和雨水在计算管段中流行的时间t2组成。其计算公式:t=t1+mt2计算时t1通常取值是()。A、3~5minB、5~8minC、5~12minD、5~15min

初损后法中的产流历时tR等于()。A、降雨历时tB、降雨历时t减去初损历时to,再减去不产流的降雨历时t′C、后损历时D、初损历时

单选题雨水管渠的设计降雨历时t,由地面降水时间t1和雨水在计算管段中流行的时间t2组成。其计算公式:t=t1+mt2其中m为延迟系数,计算时在明渠管渠中的取值是()。A1.2B1.5C2D3

单选题雨水管渠的设计降雨历时t,由地面降水时间t1和雨水在计算管段中流行的时间t2组成。其计算公式:t=t1+mt2其中m为延迟系数,计算时在暗管管渠中的取值是()。A1B1.5C2D3