Z(DD)-5机音频特性:二线端发送输入电平是(),接收输出电平为()。

Z(DD)-5机音频特性:二线端发送输入电平是(),接收输出电平为()。


相关考题:

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【 】。

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 subl(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 subl(1, 2,a) Print a End Sub 程序运行后,单击命令按钮,则窗体下显示的内容是______。A.8B.2C.5D.11

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

设有下列过程: Sub ff(x,y,z) X=y+z End Sub 下列选项中所有参数的虚实结合都是传址方式调用的是 A.Call ff(5,7.z) B.Call ff(x,y.z)C.Call ff(3+X,5+Y,z) D.Call ff(x+y,x-y,z)

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

以下程序的运行结果是sub(int x,int y,int *z){*z=y-x;}main(){ int a,b,c;sub(10,5,a);sub(7,a,b);sub(a,b,c);printf("M,M,M\n",a,b,c);}A.5,2,3B.-5,-12,-7C.-5,-12,-17D.5,-2,-7

设有如下过程:Sub ff(x,y,z,) x=y+zEnd Sub以下所有参数的虚实结合都是传址方式的调用语句是A.Call ff(5,7,z)B.Call ff(x,y,z)C.Call ff(3+x,5+y,z)D.Call ff(x+y,x-y,z)

以下程序的功能是从键盘上输入若干个数字,当输入负数时结束输入,统计出若干数字的平均值,显示结果。请填空。Private Sub Form_Click()Dim x,y As SingleDim z As Integerx=InputBox("Enter a score")Do while【 】y=y+xz=z+1x=InputBox("Enter a score")LoopIf z=0 Thenz=1End Ify=y/zMsgoBox yEnd Sub

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

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【 】。

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;{ *2=y-x;}main(){ int a,b, 请选出以下程序的输出结果( ) #include<stdio.h> sub(x,y,z) int x,y,*z; { *2=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

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

以下程序的运行结果是( )。 #include(iostream.h voidsub(intx,inty,int*z) {*z=y-x;} voidmain( ) {inta,b,c; sub(10,5,&a); sub(7,a,&b); sub(a,b,&c); cout((a","b","Cendl;}A.5,2,3B.-5,-12,-7C.-5,-12,-17D.5,-2,-7

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 a, 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.5,23B.-5,-12,7C.-5,-12,-17D.5,2,-7

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

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

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

以下程序运行后,单击按钮输出结果是 Private Sub Commandl_Click( ) Dim x As Integer,y As Integer,z As Integer X=4:y=2: Z=3 Call Gopd(x,x,z) Print x;X;Z Call Gopd(x,y,y) Print x;y;y End Sub Private Sub Gopd(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

单击按钮时,以下列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,2) Print x;x;z Call proc1(x,y,y) Print x;y;y End SubA.6 6 12 6 6 10B.9 5 10 5 10 10C.9 6 12 9 10 15D.9 5 10 5 4 10

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,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

执行下面的一段C程序后,输出结果变量应为______。sub (int x, int y, int *z) { *z=y-x; } main() { int a, b, c; sub (10, 5, sub(7, a, sub(a, b, printf ("%d, %d, %d\n", a, b, c); }A. 5, 2, 3 B. -5, -12, -7 C. -5, -12, -17 D. 5, -2, -7

Z(DD)-12拔号音为(),由本端机或()机发送。

Z(DD)-5载波机忙音信号断续比约为(),由自已发送,用户摘机听到忙音表示()。