梁正应力计算公式σ=My/IZ中,IZ叫()。A、截面面积B、截面抵抗矩C、惯性矩D、面积矩

梁正应力计算公式σ=My/IZ中,IZ叫()。

  • A、截面面积
  • B、截面抵抗矩
  • C、惯性矩
  • D、面积矩

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

程序执行结果s的值是【 】.Private Sub Command l-Click ()I =0DoS= I +SI = I + lLoop Until I >=4End Sub

阅读程序: Sub p( b () As Integer)For i =1To 4 b(i) = 2(iNext i End Sub Private Sub Command1_Click()Dim a (1 To 4) As Integer a(1)=5 a(2)=6 a(3)=7 a(4)=8 call p (a) For i=1 To 4 Print a(i) Next iEnd Sub运行上面的程序,单击命令按钮,输出结果为。

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

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

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

设有如下程序: Private Sub search(a()As Variant,ByVal key As Variant,index%) Dim I% For I = Lbound(a)To Ubound(A)If key=a(I)Then index=I Exit Sub End If Next I index=-1 End Sub Private Sub Form_Load() Show Dim b()As Variant Dim n As Integer b=Array(21,64,92,15,72,38,45,72) Call search(b, 45, n) Print n End Sub 程序运行后,输出的结果是A.2B.6C.10D.12

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

编写如下事件过程: Private sub sub1 (ByVal x1 As String, y1 As String) Dim xt As String Dim i As Integer i = Len(x1) Do While i>= 1 xt = xt + Mid(x1, i, 1) i=i-1 Loop y1 = xt End Sub Private Sub Form. Click() Dim s1 As String, s2 As String s1= "teacher" sub1 s1, s2 Print s2 End Sub 程序运行后,单击窗体,则窗体上显示的内容是A.rehcaetB.tahreeeC.themeeD.eerthea

以下程序的运行结果是include void sub(int x,int y,int*z){*z=y-x;}void main(){i 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

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

编写如下事件过程: Option Base 1 Private Sub Form Click() Dim x1()As Integer Dim i As Integer Dim s As Integer ReDim x1(3) For i = 1 To UBound(x1) x1(i)=i + 1 Next i Call sub1(x1) For i = 1 To UBound(x1) s = s + x1(i) Next i Print s End Sub Private Sub sub1(n()As Integer) Dim i As Integer ReDim Preserve n(5) For i = 3 To 5 n(i)=n(i-1)*2 Next i End Sub 程序运行后,单击窗体,则窗体上显示的内容是A.6B.12C.24D.47

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

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

编写如下程序: Private Sub Command1_Click() x="abcd" y="1234" For i=1 To 4 z=z+Mid(x,i,1)+Left(y,1) Next i 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.abcd1234B.a1b2c3d4C.a1b1c1d1D.1234abcd

以下能够正确计算n!的程序是( )。A.Private Sub Commandl_C1ick()B.hiVate Sub Commandl_C1ick() n=5:x=1 n=5:x=1:i=1 DO DO X=x*1 X=X*1 i=i+1 i=i+1 Loop while i<n Loop While<n Print x Ptinte x End Sub End SubC.Private Sub Commandl_Click ()D.Pdvate Sub Commandl C1ick() n=5:X=1:i=1 n=5=:x=1:i=1 DO DO X=X*1 X=X*1 i=i+1 i=i+1 Loop While i>n Print x Print x End Sub End Sub

( 34 )在窗体中添加一个名称为 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 -2x=Mid(s,I,I)y=Left(s,I)z=Right(s,I)z=x y zNext IMsgBox zEnd 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

在梁的正应力计算公式б=My/Iz没有弹性模量E,说明正应力的大小与材料无关。

class Super {  public int i = 0;  public Super(String text) {  i = 1; }  }  public class Sub extends Super {  public Sub(String text) {  i = 2;  }   public static void main(String args[]) {  Sub sub = new Sub(“Hello”);  System.out.println(sub.i);  }  }  What is the result?()  A、 0B、 1C、 2D、 Compilation fails.

单选题class Super {  public int i = 0;  public Super(String text) {  i = 1; }  }  public class Sub extends Super {  public Sub(String text) {  i = 2;  }   public static void main(String args[]) {  Sub sub = new Sub(“Hello”);  System.out.println(sub.i);  }  }  What is the result?()A 0B 1C 2D Compilation fails.

单选题class super (   public int I = 0;   public super (string text) (   I = 1   )   )     public class sub extends super (   public sub (string text) (   i= 2   )   public static void main (straing args) (  sub sub = new sub (“Hello”);   system.out. PrintIn(sub.i);  )   )   What is the result?()A Compilation will fail.B Compilation will succeed and the program will print “0”C Compilation will succeed and the program will print “1”D Compilation will succeed and the program will print “2”