一台三相异步电动机,UN=380V,PN=7.5kW,NN=0.87,cosφN=0.85,nN=1440r/min。该电动机的额定电流IN=()
一台三相异步电动机,UN=380V,PN=7.5kW,NN=0.87,cosφN=0.85,nN=1440r/min。该电动机的额定电流IN=()
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1+ + + +…….n 最大的n。请填空Private Sub Command1__Click()Dim s ,m,n AS Integerm=Val(InputBox(“请输入一个大于100的整数”))n=_______s=0Do While s N=n+1S=s+n*nLoopPrint “满足不等式的最大n是_______End Sub
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设有如下程序:Private Sub Form_Click()Dim n As Integer, s As Integern = 8s = 0Dos = s + nn = n - 1Loop While n 0Print sEnd Sub以上程序的功能是______。程序运行后,单击窗体,输出结果为______。
在窗体中有一个命令按钮command1,编写事件代码如下: Private Sub Command1_Click() Dim s As Integer s=P(1)+P(2)+P(3)+P(4) Debug.Print s End Sub Public Function P(N As Integer) Dim Sum As Integer Sum=0 For i=1 To N Sum=Sum+1 Next i P=Sum End Function 打开窗体运行后,单击命令按钮,输出的结果是( )。A.15B.20C.25D.35
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设程序中有如下数组定义和过程调用语句: Dim a(10)As Integer … Call D(a) 如下过程定义巾,正确的是( )。A.Private Sub p(a As Integer)B.Private Sub p(a( )As Integer)C.Private Sub p(a(10)As Integer)D.Private Sub p(a(n)As Integer)
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单击一次命令按钮后,下列程序的执行结果是 Private Sub Command1_Click() s=P(1) +P(2) +P(3) +P(4) Print s End Sub Public Function P(N As Integer) Static Sum For i=1 To N Sum=Sum+i Next i P=Sum End FunctionA.15B.25C.35D.45
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 m As Integer, n As Integer, p As Integer m=3: n=5: p=0 Call Y(m, n, p) Print Str(p) End Sub Sub Y(ByVal i As Integer, ByVal j As Integer, k As Integer) k=i+j End Sub 程序运行后,如果单击命令按钮,则在窗体上显示的内容是( )A.4B.6C.8D.10
在窗体中添加一个命令按钮,编写如下程序: Private Sub Subl(p,m,n) p=p+1:m=m+1:n=n+1 Print"subl:";p;m;n End Sub Private Sub Command1_Click() al=1:b=2:c1=3 Call Subl(a,b1+3,c1) Print"Main:";a1;b1;c1 End Sub 程序运行后,输出结果为A.Sub:2 6 4 Main:2 6 4B.Sub:2 6 4 Main:2 6 4C.Sub:2 6 4 Main:1 2 3D.Sub:2 6 4 Main:2 2 3
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设程序中有如下数组定义和过程调用语句:Dim a(10) as integer……Call p(a)如下过程定义中,正确的是A)Private Sub p(a as integer)B)Private Sub p(a() as integer)C)Private Sub p(a(10) as integer)D)Private Sub p(a(n) as integer)
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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 sub1(p,m,n) p=p + 1 : m = m + 1 : n =n + 1 Print p;m;n End Sub Private Sub Command1_Click() x=6 : y=4 : z=2 Call sub1(x,y+1,(z)) Print x;y;z End Sub 程序运行后,单击命令按钮,则窗体上第二行显示的内容是A.7 6 3B.7 4 2C.6 4 2D.4 6 3
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若有如下程序: sub(p,n) int(*p)[3],n; { int i; for(i=0;i<=n;i++) printf("%d",*(*(p+i)+n)); } main() {int s[3][3]={1,2,3,4,5,6,7,8,9}; sub(s,2); } 则程序运行后的输出结果是( )A.3 6 9B.2 4 8C.4 5 6D.7 8 9
在窗体中添加一个命令按钮,编写如下程序: Private Sub Sub1(p,m,n) p=p+1:m=m+1:n=n+1 Print "sub1:";p;m;n End Sub Private Sub Command1_Click() a1=1:b=2:c1=3 Call Sub1(a,b1+3,c1) Print"Main:";a1;b1;c1 End Sub 程序运行后,输出结果为A.Sub: 2 6 4 Main: 2 6 4B.Sub: 2 6 4 Main: 2 6 4C.Sub: 2 6 4 Main: 1 2 3D.Sub: 2 6 4 Main: 2 2 3
若有如下程序: int s[3] [3]={'a','b','C','d','e','f','g','h','i'},*t; main() {t:(int*)malloc(sizeof(int)); sub(t,s); printf("%c\n",*t); } sub(int*p,int b[][3]) {*p=b[2][1]; } 则程序运行后的输出结果是( )。A.dB.eC.hD.b
一台三相鼠笼型异步电动机,P1r=4KW,U1N=380V,△联结,r1=4.47Ω,x1=6.7Ω,rm=11.9Ω,xm=188Ω,r’23.18Ω,x’w=9.85Ω,nN=1442r/min。求额定转速时的电磁转矩。
单选题酶促反应速度(v)达到最大反应速度(Vmax)的80%时,底物浓度[S]为Ap1Ksubm/sub/pBp2Ksubm/sub/pCp3Ksubm/sub/pDp4Ksubm/sub/pEp5Ksubm/sub/p