某三极管的极限参数为ICM =30 mA、P=200 mW、UBR(CEO)=30V。当工作电压 UCE=10V时,工作电流IC不得超过()mA;当工作电压UCE=1V时, IC不得超过()mA;当工作电流IC=1mA时,UCE不得超过()V
某三极管的极限参数为ICM =30 mA、P=200 mW、UBR(CEO)=30V。当工作电压 UCE=10V时,工作电流IC不得超过()mA;当工作电压UCE=1V时, IC不得超过()mA;当工作电流IC=1mA时,UCE不得超过()V
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【 】。
有如下程序:Private Sub Form_Click()Dim i As Integer,Sum As IntegerSum=0For i=2 To 10If i Mod 2<>0 And i Mod 3=0 ThenSum=Sum+iEndIfNextPrint SumEnd Sub程序运行后,单击窗体,输出结果为A.12B.30C.24D.18
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
有如下程序: Private Sub Form_Click() Dim i As Integer,Sum As Integer Sum=0 For i=2 To 10 If i Mod 2<>0 And i Mod 3=0 Then Sum=Sum+i End If Next Print Sum End Sub 程序运行后,单击窗体,输出结果为A.12B.30C.24D.18
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。
有如下程序:Private Sub Form_Click()Dim i As Integer, sum As Integersum = 0For i = 2 To 10If i Mod 2 0 And i Mod 3 = 0 Thensum = sum + iEnd IfNext iPrint sumEnd Sub程序运行后,单击窗体,输出结果为( )。A.12B.30C.24D.18
数组A在子过程或函数中定义为形参,正确的语句是( )。 A、Private Sub sele(ByVal A( ) As integer)B、Private Function sale(A() As Integer) As StringC、Private Sub sale(A() As Integer) As IntegerD、Private Sub sale(A(i) As Integer)
设有命令按钮Command1的单击事件过程,代码如下,请填空。Private Sub Command1_Click()Dim a(30) As IntegerFor i=1 To 30a(i) =iNextFor Each arrItem______aIf arrItem Mod 7=0 Then Print arrItem;If arrItem>90 Then Exit ForNextEnd Sub
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
有如下程序: Private Sub Form_Click( ) Dim i As Integer, Sum As Integer Sum = 0 For i = 2 To 10 If i Mod 2=0 And i Mod 3<>0 Then Sum = Sum + i End If Next Print Sum End Sub 程序运行后,单击窗体,输出结果为A.12B.30C.24D.18
有过程如下:Sub fact (m As Integer, total As Long) Dim i As Integer total = 1 for i = 1 To m total = total*i Next iEnd Sub调用它的事件过程如下:Private Sub Command1_ Click () Dim tot As Long Dim a As Integer a = Val InputBox (“请输入数据”)) Call fact (a, tot) Print totEnd Sub则输入数据5,运行结果为 ______。A.100B.120C.200D.50
有如下程序:: Private Sub Form. Click() Dim i As Integer,sum As Integer sum=0 For i=2 To 10 If i Mod 2 <>0 And i Mod 3=0 Then sum=sum+i End If Next i Print sum End Sub 程序运行后,单击窗体,输出结果为______。A. 12B.30C.24D.18
有如下程序: Private Sub Form_Click() Dim i As Integer, Sum As Integer sum=0 For i=2 To 10 If i Mod 2<>0 And i Mod 3=0 Then sum=sum+i End If Next i Print sum End Sub 程序运行后,单击窗体,输出结果为______。A.12B.30C.24D.18
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
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
有如下程序:Private Sub Form_Click()Dim i As Integer, Sum As IntegerSum=0For i=2 To 10If i Mod 2=0 And i Mod 30 ThenSum=Sum+iEnd IfNextPrint SumEnd Sub程序运行后,单击窗体,输出结果为A.12B.30C.24D.18
单击一次命令按钮之后,在对话框中输入12,21,30,3,窗体中的输出结果为______。 Private Sub Command1_ Click() For i = 1 To 4 s = InputBox (“请输入”) Call per(i, s) Next i Print s End Sub Sub per(a, ByValB)b = 1 For i = 1 To 3 a = a * i Next i End SubA.12 21 30 3B.24 42 60 6C.3 30 21 12D.只能输入一个数
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
单击一次命令按钮之后,在对话框中输入10,20,30,40,窗体中的输出结果为______。 Private Sub Command1_ Click() Dim a(4) As Integer For i = 1 To 4 a(i) = InputBox (“请输入:”) Next i Call subper (A.For i = 1 To 4 Print a(i) Next i End Sub Sub subper (b () As Integer) For i = 1 To 4 b(i) = 2 * i Next i End SubA.10 20 30 40B.1 2 3 4C.2 4 6 8D.5 10 15 20
在VBScript中,Sub过程和Function过程的主要区别为()。A、Sub过程可以使用参数,而Function过程不能使用参数B、Sub过程不能使用参数,而Function过程能使用参数C、Sub过程不返回任何值,而Function过程有返回值D、Function过程不返回任何值,而Sub过程有返回值
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”