两个同频率的交流电i1、i2，如果Δφ=φ1-φ20，则称i2滞后i1。
两个同频率的交流电i1、i2，如果Δφ=φ1-φ2>0，则称i2滞后i1。
相关考题：
下面程序段的运行结果是【 】。Option Base 1Private Sub swap(a()As InteSer)For I=1 to 10\2t=a(i)a(i)=a(10-1+1)a(10-1+1)=tNext1End SubPrivate Sub Form_Click()Dim x(10)As IntegerFor I=1 to 10x(i)=I*2Next1Swap x()For1=1 to 10Print x (i)Next IEnd Sub
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
下面程序的输出结果是【 】。Private Sub Commandl_Click( )Dim a(1 To 20)Dim iFori = 1 To 20a(i) = iNext iFor Each i In a( )a(i) = 20Next iPrint a(2)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
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： 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
下列程序的输出结果是【 】。Private Sub Command l Click()Dim a(1 TO 20)Dim iFor i＝1 TO 20a(i)＝iNext iFor Each i In a()a(i)＝20Next iPrint a(2) End Sub
下列程序的输出结果是【 】。Private Sub Command1_Click()Dim a(1 To 20)Dim iFor i=1 To 20a(i)=iNext iFor Each i In a()a(i)=20Next iPrint a(2)End Sub
请阅读程序： Sub subP(b（ ）As Integer) For i=1 To4 b(i)=2*i Next i End Sub Private Sub Commandl 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 运行上面的程序，单击命令按钮，则输出结果是（ ）。A.2 4 6 8B.5 6 7 8C.10 12 14 16D.出错
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
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
下列程序的输出结果是______。Private Sub Command1_Click()Dim arr(1 To 10)For i=l TO 10arr(i)=iNext iFor Each i In arr()art(i)=arr(i)*2+1Next iMsgBox arr(7)End Sub
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
阅读程序： 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 subP a() For i=1 To 4 Print a(i) Next i End Sub运行以上程序，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
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
阅读程序 SUB P(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 P A( ) FOR I = 1 TO 4 MSGBOX A(I) NEXT I END SUB 运行上面的程序，单击命令按钮COMMAND1后，消息框4次输出的内容分别是( )。A．出错B．10, 12, 14, 16C．5, 6, 7, 8D．2, 4, 6, 8
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”