一输入电阻Ri＝500MΩ，零电流I0＝10－9A的DC-DVM，测量内阻r＝10kΩ的U＝1V电压源，求由Ri和I0引起的误差极限r。
一输入电阻Ri＝500MΩ，零电流I0＝10－9A的DC-DVM，测量内阻r＝10kΩ的U＝1V电压源，求由Ri和I0引起的误差极限r。
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 Command1_Click() Sum=0 For x=1 To 5 Call subl(x, s) Sum=Sum+s Next x Print Sum End Sub Private Sub subl(y, w) w=1 For i=1 To y w=w*i Next i End Sub 程序运行后。单击命令按钮，则窗体上显示的内容是______。A．5B．120C．153D．160
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。
以下程序的运行结果是( ) #define MAX 10 int a[MAX]，i; main() { printf("\n");sub1()；sub3(A) ,sub2()，sub3(A) ； } sub2() { int a[MAX]，i，max； max=5； for(i=0；i＜max；i++)a[i]＝i； } sub1() {for(i=0;i＜MAX；i++)a[i]＝i+i; } sub3(int a[]) { int i; for(i=0;i＜MAX，i++)printf("%d"，a[i])； printf("\n")； }A．0 2 4 6 8 10 12 14 16 18 0 1 2 3 4B．0 1 2 3 4 0 2 4 6 8 10 12 14 16 18C．0 1 2 3 4 5 6 7 8 9 0 1 2 3 4D．0 2 4 6 8 10 12 14 16 18 0 2 4 6 8 10 12 14 16 18
下面程序的执行结果是______。 #define MAX 10 nt a[MAX],i； main() { printf("\n")； sub1()；sub3(A) ； sub2()；sub3(A) ； } sub1() {for(i=0;i＜1MAX;i++) a[i]-i+i； } sub2() {int a[MAX],i,max； max=5； for(i=0;i＜max;i++) a[i]=i； } sub3(int a[]) { int i； for(i=0;i＜MAX;i++) printf("%d",a[i])； printf("\n")； }A．0 2 4 6 8 10 12 14 16 18 0 1 2 3 4B．0 1 2 3 4 0 2 4 6 8 10 12 14 16 18C．0 1 2 3 4 5 6 7 8 9 0 1 2 3 4D．0 2 4 6 8 10 12 14 16 18 0 2 4 6 8 10 12 14 16 18
设有如下程序： Dim a()As Integer Private Sub Command1_Click() n=-5:m=6 ReDim a(n To m) For i=LBound(a，1)To UBound(a，1) a(i)=i Next i Print a(LBound(a，1))；a(UBound(a，1)) End Sub 程序运行后，单击命令按钮，则输出结果是 ______。A．0 0B．-5 0C．-5 6D．0 6
单击一次命令按钮之后，窗体中的输出结果为______。 Private Sub Command1_ Click() Dim a As Integer, b As Integer For i = 1 To 6 a=i*i+i Next i Call writein(a,B)Print a, b End Sub Sub writein(a, ByValB)b = 1 For i = 1 To 6 a=b* 4 b = b + 1 Next i End SubA．24 6B．24 0C．12 6D．12 0
在窗体上画一个命令按钮，然后编写下列程序： Private Sub Command1 click( ) Dim a As Single，b As Single a=6:b=2 RC a，b Print a，b End Sub Sub RC(x As Single，y As Single) i=x x=i/y y=i Mod y End SubA．4 3B．1 1C．3 0D．2 6
在窗体上画一个名称为CoilTlilandl的命令按钮，然后编写如下事件过程： Private Sub command1 Click() Dim m As Integer， i As Integer， x(3)As Integer For i=0 To 3：x(i)=i：Next i For i = 1 To 2： Call sub1(x，i)：Next i For i = 0 To 3： Print x(i)；： Next i End Sub Private Sub sub1(a()As Integer，k As Integer) Dim i As Integer Do a(k)=a(k)+a(k+1) j = j + 1 Loop While j ＜ 2 End Sub 程序运行后，单击命令按钮，则窗体上显示的内容是A．0 3 7 5B．0 1 2 3C．3 2 4 5D．0 5 8 3
设计一个计时程序。该程序用户界面如图所示，由一个文本框(Text1)、两个按钮：命令按钮1(Command1)、命令按钮2(Command2)组成。程序运行后，单击开始按钮，则开始计时，文本框中显示秒数，单击停止按钮，则计时停止。单击窗口则退出。请在【 】、【 】和【 】处填入适当的内容，将程序补充完整。Option ExplicitDim iPrivate Sub Command1_Click()i＝0Timer1.Interval=1000TimerEnabled=TrueEnd SubPrivate Sub Command2_Click()TimerEnabled=FalseEnd SubPrivate Sub Form_Click()【 】MeEnd SubPrivate Sub Form_Load()TimerEnabled=FalseTextText=0End SubPrivate Sub Timer1_【 】()i=i+1TextText=【 】End Sub
单击一次命令按钮之后，下更程序代码的执行结果为______ 。 Public Sub Proc(a() As Integer) Static i As Integer Do a(i) = a(i) + a(i + 1) i=i+1 Loop While i ＜ 2 End Sub Private Sub Command1_Cliek() Dim m As Integer Dim i As Integer Dim x(10) As Integer For i = 0 To 4 x(i) = i + 1 Next i For i = 1 To 2 Call Proc (x) Next i For i = 0 To 4 Print x(i); Next i End SubA．3 4 7 5 6B．3 5 7 4 5C．1 2 3 4 5D．1 2 3 5 7
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
单击命令按钮后，下列程序代码的执行结果是______。Public Sub fun (a As Integer, b As Integer, c As Integer)Doa=b+ cn=n+1Loop While n ＞ 3End SubPrivate Sub command1_ click()Dim m As Integer, n As Integer, i As IntegerFor i = 0 To 2: m = n + 1: Next iFor i = 1 To 2: Call fun (m, n, i): Next iFor i = 0 To 3Print m;Next iEnd Sub
在窗体上画一个命令按钮，然后编写如下事件过程： Sub BTC(old Copy( ) As Integer，new Copy( ) As Integer) Dim i AS Integer For i=LBound(oldCopy( ))To UBound(oldCopy( )) newCopy(i)=oldCopy(i) Next i End Sub Private Sub Command1 _ Click( ) Dimm(10) As Integer，n(10)As Integer For i=1 To 10 m(i) =i*i Next i Call BTC(m，n) Print n(5) End Sub 程序运行后，单击命令按钮输出结果为A．0B．2C．10D．25
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1+2+3+…+10的程序是A．Private sub Command1_Click( ) sum=0 For 1=1 To 10 Sum=sum+1， Next I Print Sum End SubB．Private sub Command1_Click( ) Sum=0,I=1 Do While l＜=10 Sum=Sum+1 I=I+1 Print Sum End SubC．Private Sub command1_click( ) Sum=0：I=1 Do Sum=Sum+1 I=I+1 Loop While I＜10 Print Sum End SubD．Private Sub command1_Click( ) Sum=0：I=1 Do Sum=Sum+1 l=I+1 Loop Until I＜10 Print Sum 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
下列程序运行后的输出结果是______。Private Sub f(k，s)s=1For j=1 To ks=s*jNextEnd SubPrivate Sub Command1_Click()Sum=0For i=1 To 3Call f(i，s)Sum=Sum+sNextPrint SumEnd Sub
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”
多选题下列表示中____的表示形式是正确的。ApUsub95/sub= 1%,vsubeff/sub =9 /pBpUsubr/sub= 1%,k=2 /pCpusubC/sub=0. 5% /pDpusubC/sub=±0 5%．k=1 /p