某供电回路计算电流为Ic=300A,采用导线允许载流In=320A,回路中最大的一台电动机额定电流为INm=100A,启动电流倍数I*为INm的5倍,若采用DW10低压断路器,请选择开关的额定电流,整定瞬时脱扣电流,校验与导线的配合。
第1题:
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 Sub
B.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
C.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
D.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
第2题:
程序执行结果s的值是【 】.
Private Sub Command l-Click ()
I =0
Do
S= I +S
I = I + l
Loop Until I >=4
End Sub
第3题:
执行下面的程序段,x的值为【 】。
Private Sub Command1_Click()
For i=1 To 9
a=a+i
Next
x=Val(i)
MsgBox x
End Sub
第4题:
以下能够正确计算n!的程序是
A.Private Sub Command1_Chck( ) n=5:x=1 Do x=x*i i=i+1 Loop While i<n Print x End Sub
B.Private Sub Command1_Click( ) n=5:x=1:i=l Do x=x*i i=i+1 Loop While i<n Print x End Sub
C.Private Sub Command1_Click( ) n=5:x=1:i=l Do x=x*i i=i+1 Loop While i<=n Print x End Sub
D.Private Sub Command1_Click( ) n=5:x=1:i=l Dox=x*i i=i+1 Loop While i>n Print x End Sub
第5题:
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。
第6题:
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 8
B.5 6 7 8
C.10 12 14 6
D.出错
第7题:
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 8
B.5 6 7 8
C.10 12 14 16
D.出错
第8题:
有一过程如下:
Sub Sub1(m As Integer,total As Long)
Dim i As Integer
total=1
For i=1 To m
total=total*i
Next
End Sub
调用它的事件过程如下:
Private Sub Command1_Click()
Dim tot As Long,a As Integer
a=Val(InputBox("请输入数据"))
Call Sub1(a,tot)
Print tot
End Sub
则输入数据5,运行结果为【 】。
第9题:
A、Private Sub sele(ByVal A( ) As integer)
B、Private Function sale(A() As Integer) As String
C、Private Sub sale(A() As Integer) As Integer
D、Private Sub sale(A(i) As Integer)
第10题:
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 Sub
B.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
C.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
D.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