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举一反三
【单选题】有如下事件过程：Private Sub Form_Load() Show Dim Arr() As Variant Arr = Array(1, 3, 5, 7, 9, 11, 13, 15) Call converse(Arr) For i = 0 To 7 Print arr(i); Next iEnd Sub 以上程序的功能是，通过调用Converse过程，将数组Arr中的元素逆序存放并输出...
A.
Private Sub converse(dim a() as Variant ) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
B.
Private Sub converse(dim a() as Variant) Dim T Dim J As Integer J = (LBound(A) + UBound(A)) / 2 For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
C.
Private Sub converse(a() As Variant) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
D.
Private Sub converse(a() As Variant) Dim T Dim J As Integer J = Int((LBound(A) + UBound(A)) / 2) For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
【单选题】在窗体上放置一个文本框Text1,编写下列事件过程: Private Sub Form Load() Text1 = "" Text1.SetFocus For i = 1 To 10 s = s + i Next i Text1 = s End Sub 程序运行时,( )。
A.
Text1中显示55
B.
Text1中显示空白
C.
Text1中显示“Text1”
D.
出错
【单选题】设窗体上有3个按钮Cmd1、Cmd2和Cmd3,如下代码的功能是( )。 Private Sub Cmd1_Click() Cmd2.Enabled=False Cmd3.Enabled=False End Sub
A.
当单击按钮 Cmd1 时,按钮 2 和按钮 3 都不可用
B.
当单击按钮 Cmd1 时,按钮 2 和按钮 3 都不可见
C.
当单击按钮 Cmd1 时,按钮 2 不可用和按钮 3 不可见
D.
当单击按钮 Cmd1 时,按钮 2 不可见和按钮 3 不可用