在真空中同一平面内,有两个置于不同位置的电流元I1dl1和I2dl2,它们之间相互作用力大小相等,方向相反的条件是()。

在真空中同一平面内,有两个置于不同位置的电流元I1dl1和I2dl2,它们之间相互作用力大小相等,方向相反的条件是()。


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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【 】。

以下能够正确计算n!的程序是( )。A.Private Sub Command1_Click()n=5: x=1Dox=x * II=I + 1Loop While I nPrint xEnd SubB.Private Sub Command1_Click()n=5: x=1: I=1Dox=x * II=I + 1Loop While I nPrint xEnd SubC.Private Sub Command1_Click()n=5: x=1: I=1Dox=x * II=I + 1Loop While I =nPrint xEnd SubD.Private Sub Command1_Click()n=5: x=1: I=1Dox=x * II=I + 1Loop While I nPrint xEnd Sub

有以下程序: Sub subP(b()As Integer) For i=1 To 4 b(i)=2*i Next i End Sub Private Sub Command1_Click() Dim a(1 To 4)As Integer a(i)=5 a(2)=6 a(3)=7 a(4)=8 subP a() For i=1 To 4 Print a(i) Next i End Sub 运行上面的程序,单击命令按钮,输出结果为______。A. 2 4 6 8B.5 6 7 8C.10 12 14 6D.出错

有以下程序: Sub subP(b()As Integer) For i=1 To 4 b(i)=2*i Next 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 subPa() For i=1 To 4 Print a(i) Next i End Sub 运行上面的程序,单击命令按钮,输出结果为( )A.2 4 6 8B.5 6 7 8C.10 12 14 16D.出错

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。

下面程序段的运行结果是【 】。Option Base 1Private Sub Swap (a() As IntegFor I=1 to 10\2t=a(I)a(I)=a(10-I+1)a(10-I+1)=tNext IEnd SubPrivate Sub Form_Click()Dim x(10) As IntegerFor I=1 to 10x(I)=I*2Next ISwap x()For I=1 to 10Print x(I)Next IEnd Sub

以下能够正确计算n!的程序是A.Private Sub Command1_Chck( ) n=5:x=1 Do x=x*i i=i+1 Loop While i<n Print x End SubB.Private Sub Command1_Click( ) n=5:x=1:i=l Do x=x*i i=i+1 Loop While i<n Print x End SubC.Private Sub Command1_Click( ) n=5:x=1:i=l Do x=x*i i=i+1 Loop While i<=n Print x End SubD.Private Sub Command1_Click( ) n=5:x=1:i=l Dox=x*i i=i+1 Loop While i>n Print x End Sub

以下能够正确计算n!的程序是A.Private Sub Command1 Click() n=5:x=1 Do x=x * I I=I + 1 Loop While I < n Print x End SubB.Private Sub Command1_Click() n=5:X=1:I=1 Do X=X*I I=I + 1 Loop While I <n Print x End SubC.Private Sub Command1_Click() n=5:X=1:I=1 Do X=X * I I=I + 1 Loop While I<=n Print X End SubD.Private Sub Command1_Click() n=5:X=1:I=1 Do x=x * I I=I + 1 Loop While I>n Print X End Sub

在窗体中添加一个标签LblResult和一个命令按钮Command1,然后编写程序。程序的功能是单击命令按钮,计算1+2+3+4+5的值,并把结果转化为字符串显示在标签内,能够实现上述功能的程序段是, ( )A.Private Sub Command1_Click() Dim I,R As Integer For I=1 To 5 Step 1 R=R+I Next LblResult. Name=Str$ (R) End SubB.Private Sub Command1_ClickO Dim I,R As Integer For I=1 To 5 Step 1 R=R+I Next LblResult. Caption= Str$ (R) End SubC.Private Sub Command1_Click() Dim I,R As Integer Do While I<5 R=R+I I=I+1 Loop LblResult. Caption=Str$ (R) End SubD.Private Sub Command1_Click() Dim I,R As Integer Do R=R+I I=I+1 Loop While I<5 LblResult. Caption=Str$ (R) End Sub

以下能够正确计算n! 的程序是( )。A.Private Sub Command1_Click( ) n=5:x=l Do x=x*i i=i+1 Loop While i < n Print x End SubB.Private Sub Command1_Click( ) n=5:x=1:i=1 Do x=x*i i=i+1 Loop While i < n Print x End SubC.Private Sub Command1_Cliek( ) n:5:x=1:i=1 Do x=x* i i:i+1 Loop While i < = n Print x End SubD.Private Sub Command1_Cliek( ) n=5:x:1:i=1 Do x=x*i i=j+1 Loop While i > n Print x End Sub

以下能够正确计算n!的程序是A.Privas Sub Command1_Click() n=5:x=1 Do x=x*i i=i+1 Loop While i<n Print x End SubB.Private Sub Command1_Click() n=5:x=1:i=1 Do x=x*i i=i+1 Loop While i<n Print x End SubC.Private Sub Command1_Click() n=5:x=1:i=1 Do x=x*i i=i+1 Loop while i<=n Print x End SubD.Private Sub Command1_Click() n=5:x=1:i=1 Do x=x*i i=i+1 Loop While i>n Print x End Sub

以下能够正确计算1+2+3+…+10的程序是A.Private Sub Command1_Click() Sum=0 ForI=1 To 10 Sum=Sum+I Next I Print Sum End SubB.Private Sub Command1_Click() Sum=0,I=1 Do While I<=10 Sum=Sum+I I=I+1 Print Sum End SubC.Private Sub Command1_Click() Sum=0: I=1 Do Sum=Sum+I I=I+1 Loop While I<10 Print Sum End SubD.Private Sub Command1_Click() Sum=0: I=1 Do Sum=Sum+I I=I+1 Loop Until I<10 Print Sum End Sub

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

有程序如下: Sub subP(b() As Integer) For i=1 To 4 b(i)=2*i Next 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 subP a() For i=1 To 4 Print a(i) Next i End Sub运行上面程序,单击命令按钮,输出结果为______ 。A. 2 4 6 8B.5 2 2 2C.10 12 14 16D.出错

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

以下能够正确计算n!的程序是______。A.Private Sub Commeadl_Click() n=5: x=1 Do x=x*i i=i+1 Loop While i<n Print x End SubB.Private Sub Command1_Click() n=5: x=1: i=1 Do x=x*i i=i+1 Loop While i<n Print x End SubC.Private Sub Command1_Click() n=5: x=1: i=1 Do x=x*i i=i+1 Loop Whilei<=n Print x End SubD.Private Sub Commsndl_Click() n=5: x=1: i=1 Do x=x*i i=i+1 Loop While i>n Print x End Sub

以下能够正确计算n!的程序是( )。A.Pfivate Sub Commgld1_LClick() n=5:x=1 Do x=x*1 i=i+1 Loop Whilei<nB.Private Sub Command1_Click() n=5:x=1:i=1 Do x=x*1 i=i+1 Loop Whilei<n Print x End SubC.Pfivate Sub Command1_ C1ick() n=5:x=1:i=1 Do X=X*1 i=i+1 Loop While i<=nD.Private Sub Command1_C1ick() n=5:x=1:i=1 Do X=X*1 i=i+1 Loop While i>n Print x End Sub

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

真空中有两根互相平行的无限长直导线L1和L2,相距0.1m。通有方向相反的电流,I1=20A,I2=10A,a点位于L1、L2之间的中点,且与两导线在同一平面内,如图所示,a点的磁感应强度为:

在力系中,如果所有的作用线都在()平面内,那么这个力系称为平面力系。A、同一B、两个不同的C、另一个D、相交

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.

当构件在空中翻转时,为了保证构件在翻转时的稳定性,3个吊耳的位置应是()。A、同一平面内B、2个吊耳高于另1个吊耳C、1个吊耳高于其他2个吊耳D、3个吊耳在一条直线上

下列关于焦炭塔中子料位计中的中子源与中子管的安装位置表述正确的是()。A、以同一平面安装在容器径向的二端B、安装在容器边缘的同一位置C、以一定角度在同一平面内安装在容器边缘D、以一定角度在不同平面安装在容器边缘

一个物体上的作用力系,满足()条件,就称这种力系为平面汇交力系。A、作用线都在同一平面内,且汇交于一点B、作用线都在同一平面内,但不交于一点C、作用线在不同一平面内,且汇交于一点D、作用线在不同一平面内,且不交于一点

物体在大小相等,方向相反的两个力作用下,并不处于平衡状态,这是因为()。A、两个力不在同一条直线B、两个力作用点不在同一平面内C、两个力不在同一平面上

为了在空中使用速度刹车,速度刹车手柄必须()A、向上提,并置于相应位置B、向下压,并置于相应位置C、置于“ARM”位D、直接扳动手柄,并置于相应位置

单选题一个物体上的作用力系,满足()条件,就称这种力系为平面汇交力系。A作用线都在同一平面内,且汇交于一点B作用线都在同一平面内.但不交于一点C作用线在不同一平面内,且汇交于一点D作用线在不同一平面内,且不交于一点