由()组成交流电桥平衡条件可写成Z1Z2=Z3Z4A、电感和电容B、电阻、电容和电感C、串联和并联D、并联和混联
由()组成交流电桥平衡条件可写成Z1Z2=Z3Z4
- A、电感和电容
- B、电阻、电容和电感
- C、串联和并联
- D、并联和混联
相关考题:
在窗体上画一个命令按钮和一个标签,其名称分别为Command1和Labell,然后编写如下代码:Sub S(x As Integer,Y As Integer)Static z As Integery=x*x+zz=yEnd SubPrivate Sub Command1_Click()Dim i As Integer,z As Integerm=0z=0For i=1 To 3S i,zm=m+zNext iLabel1.Caption=Str(m)End Sub程序运行后,单击命令按钮,在标签中显示的内容是A.50B.20C.14D.7
在窗体中添加一个命令按钮(名称为Command1)和一个文本框(名为text1),然后编写如下事件过程: Private Sub Command_Click() Dim x As Integer, y As Integer,z As Integer x=5: y=7: z=0 Me!Text1="" Call p1(x, y, z) Me!Textl=z End Sub Sub p1 (a As Integer, b As Integer, Byval c As Integer) c=a+b End Sub 打开窗体运行后,单击命令按钮,文本框中显示的内容是( )。A.12B.0C.5D.7
下面程序: Private Sub Form. _Click () Dim x, y, z As Integer x=5 y=7 z=0 Call P1(x, y, z) Print Str (z) End Sub Sub P1 (ByVal a As Integer, ByVal b As Integer , c As Integer) c= a+b End Sub 运行后的输出结果为______。A.0B.12C.Str(z)D.显示错误信息
在窗体中添加—个名称为Command1的命令按钮,然后编写如下事件代码: Private Sub Command1_Click() s="ABBACDDCBA" For I=6 To 2 Step -2 x=Mid(s,I,I) y=Left(s,I) z=Right(s,I) z=x y z Next I MSgBox z End Sub 窗体打开运行后,单击命令按钮,则消息框的输出结果是______。A.AABAABB.ABBABAC.BABBAD.BBABBA
以下程序的运行结果是()。includevoid sub(int x,int y,int*z){*Z=y-x;}void main() 以下程序的运行结果是( )。 #include<iostream.h> void sub(int x,int y,int*z) {*Z=y-x;} void main() {int a,b,c; sub(10,5,a); sub(7,a,b); sub(a,b,c); cout<<a<<“,”<<b<<“,”<<c<<endl;}A.5,2,3B.-5,-12,-7C.-5,-12,-17D.5,-2,-7
单击按钮时,以下程序运行后的输出结果是 Private Sub proc1(x As Integer,y As Integer,z As Integer) x=3*z y=2*z z=x+y End Sub Private Sub Command1_Click() Dim x As Integer,y As Integer,Z As Integer x=1:y=2:z=3 Call proc1(x,x,z) Print x;x;z Call proc1(x,y,y) Print x;y;y End SubA.6 6 12 `B.9 5 10 6101051010C.9 6 12D.9 10 10 910155410
有如下过程:Sub SS(ByVal X,ByRef Y,Z)X=X + 1Y=Y + 1Z=Z + 1End Sub执行该过程的事件过程如下:Private Sub Command1_Click()A = 1B = 2C = 3Call SS(A,B,C) Print A;B;CEnd Sub则该程序的执行结果是【 】。
在窗体中添加一个命令按钮,并编写如下程序:Private Sub Command1_ Click() x=1: y=2: z=3 x=y: y=z: z=xEnd Sub程序执行后,输出的结果是______。A.3B.0C.2D.1
若有以下程序:include using namespace std;void sub(int x,int y, int *z){ *z = y+ 若有以下程序: #include <iostream> using namespace std; void sub(int x,int y, int *z) { *z = y+x; } int main() { int a,b, c; sub (8,4,a) ; sub (6, a, b) ; sub(a,b,c) ; cout<<a<<", "<<b<<", "<<c<<end1; return 0; } 程序运行后的输出结果是( )。A.12,18,30B.-12,6,8C.6,8,10D.12,-18,16
若有以下变量和函数说明:includecharCh='*';void sub(int x,int y,char ch,double* 若有以下变量和函数说明: #include<iostream.h> charCh='*'; void sub(int x,int y,char ch,double*Z) { switch(ch) { case'+':*Z=x+y;break; case'-':*Z=x-y;break: case'*':*Z=x*y;break; case'/':*z=x/y;break: } } 以下合法的函数调用语句是( )。A.sub(10,20,Ch,y);B.sub(1.2+3,2*2,'+',Z);C.sub(sub(1,2,'+',y),sub(3,4'+',x),'-',y);D.sub(a,b,x,ch);
请选出以下程序的输出结果_______。includesub(x,y,z)int x,y,*z;{*z=y-x;}main(){int 请选出以下程序的输出结果_______。 #include<stdio.h> sub(x,y,z) int x,y,*z; {*z=y-x;} main(){ int a,b,c; sub(10,5,A) ;sub(7,a,B) ;sub(a,b,C) ; printf("%d,%d,%d\n",a,b,C) ; }A.5,2,3B.-5,-12,-7C.-5,-12,-17D.5,-2,-7
单击一次窗体之后,下列程序代码的执行结果为______。 Private Sub Command1_ Click() Dim x As Integer, y As Integer, z As Integer x = 1: y = 2: z = 3 Call fun1 (x, y, z) Print x; y; z Call fun2(x, y, z) Print x; y; z End Sub Private Sub fun1(x As Integer, y As Integer, z As Integer) x = 10 * z y=z*z+ x z=x+ y+ z End Sub Private Sub fun2 (ByVal x As Integer, ByVal y As Integer, ByVal z As Integer) x=10*z y=z*z+ x z=x+ y +z End SubA.1 2 3 30 39 72B.1 2 3 1 2 3C.30 39 72 1 2 3D.30 39 72 30 39 72
在窗体上画一个名称为Command1 的命令按钮和一个名称为Text1的文本框,然后编写如下程序: Private Sub Command1_Click( ) Dim x,y,z As Integer x=5 y=7 z=0 Texttext = " " Call P1 (x,y,z) TextText = Str(z) End Sub Sub P1(ByVal a As Integer,ByVal b As Integer,c As Integer) c=a+b End Sub 程序运行后,如果单击命令按钮,在文本框中显示的内容是 ______。A.0B.12C.Str(z)D.没有显示
在窗体上画一个名称为Command1的命令按钮和一个名称为Text1的文本框,然后编写如下程序: Private Sub Command1 Click() Dim x, y, z As Integer x = 5 y = 7 z = 0 Text1.Text = " " Call P1(x, y, z) Text1.Text=Str(z) End Sub Sub Pl(ByVal a As Integer, ByVal b As Integer, c As Integer) c = a + b End Sub 程序运行后,如果单击命令按钮,则在文本框中显示的内容是A.0B.12C.Str(z)D.没有显示
在窗体上画一个名称为Command1的命令按钮,然后编写如下事件过程: Private Sub sub1(p,m,n) p=p + 1 : m = m + 1 : n =n + 1 Print p;m;n End Sub Private Sub Command1_Click() x=6 : y=4 : z=2 Call sub1(x,y+1,(z)) Print x;y;z End Sub 程序运行后,单击命令按钮,则窗体上第二行显示的内容是A.7 6 3B.7 4 2C.6 4 2D.4 6 3
下面程序: Private Sub Form_Click() Dim x,y,z As Integer x=5 y=7 z=0 CallPI(x,y,z) Print Str(z) End Sub SubP1(By Val a As Integer, By Val b As Integer, c As Integer) C=a+b End Sub 运行后的输出结果为______。A.0B.12C.Str(z)D.显示错误信息
有如下事件过程: Sub ABD(x%,y%,z%) z%=X% +y% End Sub Private Sub Command1 _ Click( ) a%=30:b%=40 Call ABD(a%,b%,c%) Print c% End Sub 运行上面的程序,单击命令按钮,输出结果为A.70B.70.0C.7.0E+1D.显示错误信息
有下列程序: Private Sub Command1_Click() X$="Nanchang" y$="Beijing" z$="Nanjing" z$=InStr(Left(x$,3)+Right(y$,4),z$) Print z$ End Sub 程序运行后,单击命令按钮,则窗体上显示的内容是A.0B.1C.3D.4
在窗体中添加一个命令按钮,并编写如下程序: Private Sub Command1_CliCk() X=1∶Y=2∶Z=3 X=Y∶Y=Z∶Z=X Print Z End Sub 程序执行后,输出的结果是______。A.3B.0C.2D.1
请选出以下程序的输出结果 ______。include sub(x, y, z)int x, y,*z;{*z=y-x:}main() 请选出以下程序的输出结果 ______。#include <stdio. h>sub(x, y, z)int x, y,*z;{*z=y-x:}main(){ int a, b, c; sub 10,5,a);sub(7,a,b);sub(a, b, c); printf("%d,% d,/%d\n", a, b, c);}A.5,2,3B.-5,-12,-7C.-5,-12,-17D.5,-2,-7
在窗体上画一个名称为Command1的命令按钮,然后编写如下事件过程: Private Sub sub1(ByVal x As Integer, ByVal y As Integer, ByVal z As Integer) z=x * x+ y * y End Sub Private Sub Command1_Click() Dim a As Integer a = 8 Call sub1(1, 2,A)Print a End Sub 程序运行后,单击命令按钮,则窗体上显示的内容是A.8B.2C.5D.11
在窗体上面画一个命令按钮和一个标签,其名称分别为Command1和Label1,然后编写如下代码: Sub S(X As Integer,y As Integer) Static z As Integer y=x*x+Z z=y End Sub Private Sub Command1 Click( ) Dim i As Integer.z As Integer m=0 z=0 For i=1 T0 3 S i,Z m=m+z Next i Label1.Caption=Str(m) 程序运行后,单击命令按钮,在标签中显示的内容是( )。A.50B.20C.14D.7
若有如下程序:sub(int a,int b,int *z){*z=a+b;return;}main(){int a=1,b=2,c=3,d,e;sub(a,b, return;} main() {int a=1,b=2,c=3,d,e; sub(a,b,D) ; sub(c,d,e); printf("%d",e); } 则程序运行后的输出结果是A.3B.4C.5D.6
运行下列程序:Private Sub Form_Click( )a$ = 2b$ = 1Call abcd(a, b, c$, d$)Print c; dEnd SubPrivate Sub abcd(x$, y$, z$, s$)z = x + ys = x - yEnd Sub单击窗体后,则在窗体上显示的结果是( )。A.3 1B.1 3C.211D.显示出错信息
单击按钮时,以下程序运行后的输出结果是 Private Sub Commandl_Click( ) Dim X As Integer,y As Integer,z As Integer x=1:y=2: Z=3 Call God(x,x,z) Print x;x;z Call God(x,y,y) Print X;y;y End Sub Private Sub God(x As Integer,y As Integer,z As Integer) x=3 * Z + 1 y=2 * Z z=x + y End SubA.6 6 12 7 11 11B.8 5 10 5 11 11C.9 6 12 9 10 15D.8 10 10 5 9 10
填空题交流电桥各桥臂的复阻抗分别为Z1,Z2,Z3,Z4,各阻抗的相位角分别为ϕ1ϕ2ϕ3ϕ4,若电桥平衡条件为Z1/Z4=Z2/Z3,那么相位平衡条件应为()。