有人测得晶体管在UBE=0.6V时，IB=5μA，因此认为在此工作点上的γbe大约为26mv/IB=5.2KΩ。
有人测得晶体管在UBE=0.6V时，IB=5μA，因此认为在此工作点上的γbe大约为26mv/IB=5.2KΩ。
相关考题：
执行下列的程序，消息框里显示的结果是______。Pfivate Sub Form_Click()Dim Str As StringStr＝""S="Access"For i＝Len(S) To 1 Step-1Str＝StrMid(S.i,1)Next IMsgBox StrEnd Sub
下列程序的执行结果为Private Sub Command1_Click（）Dim s1 As String, s2 As Strings1= "abcd"Call Transfer（s1, s2）Print s2End SubPrivate Sub Transfer （ByVal xstr As String, ystr As String）Dim tempstr As Stringi=Len（xstr）Do While i =1tempstr=tempstr + Mid（xstr, i, 1）i=i - 1Loopystr=te mpstrEnd Sub（ ）。A．dcbaB．abdcC．abcdD．dabc
单击窗体时，下列程序的执行结果是Private Sub Invert（ByVal xstr As String, ystr As String）Dim tempstr As StringDim I As IntegerI=Len（xstr）Do While I =1tempstr=tempstr + Mid（xstr, I, 1）I=I - 1Loopystr=tempstrEnd SubPrivate Sub Form_Click（）Dim s1 As String, s2 As Strings1= "abcdef"Invert s1, s2Print s2End Sub（ ）。A．abcdefB．afbecdC．fedcbaD．defabc
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
（8）下列这个Sub过程的功能是统计字符串中“a”的个数，请在空白处填上合适的代码，将程序补充完整。Private Sub numCount() Dim num As Integer s$="software And hardware" Num=Len(s$) For i=1 unm b$=。 If b$="a"Then x=x+1 Next i Print"x="；xEnd Sub
下列程序用来计算1+2+…n,当和大于100时停止计算,请填空。Private Sub Form_Click()Dim n as integer,s as integer,I as integer,k as integers=0k=0n=inputbox(″请输入n的值)For i=1 to 100k=k+1s=s+I【 】Next iPrint sEnd Sub
设有如下程序： Private Sub Form. Click（ ） Dim s As Long，f As Long Dim n As Integer，i As Integer f=1 n=4 For i=1 To n f=f*i s=s+f Next i Print s End Sub 程序运行后，单击窗体，输出结果是（ ）。A.32B.33C.34D.35
执行下面的程序，消息框里显示的结果是_______。Private Sub Form_Click()Dim Str As StringStr=""S="Access"Fori=Len(S)To 1 Step-lStr=StrMid(S，i，1)Next iMsgBox StrEnd Sub
在窗体中添加一个名称为Com1的命令按钮，然后编写如下程序：Private Sub s(ByVal p As Integer)p=p*2End SubPrivate Sub Com1_Click()Dim i As Integeri=3Call s(i)If i＞4 Then i=i^2End sub窗体打开运行后，单击命令按钮，则消息框的输出结果为( )。
在窗体中添加一个名称为Command1的命令按钮，然后编写如下程序：Private Sub s(ByVal p As Integer)p=p*2End SubPrivate Sub Command1_click()Dim i As Integeri=3Call s(i)If i＞4 Then i=i^2MsgBox iEnd Sub窗体打开运行后，单击命令按钮，则消息框的输出结果为【 】。
有如下程序： Private Sub Command1_Click() as="A WORKER IS HERE" x = Len(a$) For i=1 To x - 1 b$ =Mid$(a$, i,3) If b$ ="WOR" Then S=S+ 1 Next Print S End Sub 单击命令按钮，程序运行结果为A．1B．2C．3D．5
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
下列程序运行后的输出结果是______。Private Sub f(k,s) s = 1 for j = 1 To k s=s*j Next jEnd SubPrivate Sub Command1_ Click () Sum = 0 for i = 1 To 3 Call f(i, s) Sum = Sum + s Next i Print Sum End SubA．0B．3C．6D．9
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
单击窗体时，下列程序的执行结果是 Private Sub Invert(By Val xstr As String，ystr As String) Dim tempstr AS String Dim I AS Integer I=Len(xstr) Do While I＞=1 tempstr=tempstr + Mid(xstr，I，1) I=I - 1 Loop ystr=tempStr End Sub Private Sub Form_Click( ) Dim s1 As String，s2 As String S1="abcdef" Invert S1，S2 Print S2 End SubA．abcdefB．afbecdC．fedcbaD．defabc
在窗体上画一个命令按钮，然后编写如下事件过程： Private Sub Commandl Click() Dim a() a=Array(1,3,5,7) s=0 For i=1 To 3 S=S*10+a(i) Next i Print s End Sub 程序运行后，输出结果为( )。A．135B．357C．531D．753
下列程序的执行结果为 Private Sub Command1_C1ick( ) Dim sl As String，s2 AS String s1="abcdef" Call lnvert(s1，s2) Print s2 End Sub Private Sub lnvert(ByVal xstr As String，ystr As String) Dim tempstr As Stdng i=Len(xstr) Do While i＞=1 tempstr=tempstr+Mid(xstr，i，1) i=i-1 Loop ystr=tempstr End SubA．fedcbaB．abcdefC．afbecdD．defabc
下列程序的执行结果为 Private Sub Command1_Click() Dim s1 As String，s2 As String S1；="abcdef" Call Invert(s1，s2) Print s2 End Sub Private Sub Invert (ByVal xstr As String，ystr As String) Dim tempstr As String i=Len(xstr) Do While i=1 tempstr=tempstr+Mid(xstr，i，1) i=i-1 Loop ystr=tempstr End SubA．fedcbaB．abcdefC．afbecdD．defabc
有如下程序： Private Sub Command1_Click( ) a$="A WORKER IS OVER THERE" x=Len(a ＄) For i=1 To x-1 b$=Mid $(a $，i，2) If b $="ER"Then s=s+1 Next i Pdnt s End Sub 程序运行后的输出结果是A．1B．2C．3D．4
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
9.程序执行结果s的值是 [9] 。Private Sub Commandl_Click()i = 0Doi = i + ls = i + sLoop Until i = 4Print sEnd 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”
填空题s=”this is the mainstring”，sub=”string”，strindex（s，sub）是（）