填空题

在算法的4个特性中，算法必须能在执行有限个步骤之后终止指的是算法的 ______特性。

【参考答案】

有穷性

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单项选择题

若有如下程序： Private Sub Command1_Click() Dim i As Integer, k As Integer k=2 For i = 1 To 3 Print H(k); Next i End Sub Function H(j As Integer) Static b a=0 a=a+1 b=b+1 H=a*b+j End Function 单击命令按钮，执行程序，输出结果是( )。

A．2 3 4
B．3 4 5
C．5 6 7
D．3 5 6

单项选择题

下列事件过程的功能是：建立一个名为Datal的随机文件，存放角度值及这些角度的正弦函数值和余弦函数值，角度为1，2，3，…，90。请在空白处填入适当的内容，将程序补充完整( )。 Private Type Ang K As Integer Sinx As Single Cosx As Single End Type Dim Ksc As Ang Private Sub Form_Click() Dim Y As Single Dim i As Integer Dim Ksc As Ang Open ______ Y = 3.14159 180 For i = 1 To 90 Ksc. K = i Ksc. Sinx = Sin(i * Y) Ksc. Cosx = Cos(i * Y) ______ Next i Close #2 End Sub

A．"..\Data1.txt" For Random As #1 Len = 10 Put #1, i, Ksc
B．"..\Data1.txt" For Random As #1 Len = 10 Put #1, Y, Kse
C．"..\Data1.txt" For Random As #1 Put #1, i, Ksc
D．"..\Data1.txt" For Random As #1 Put #1, Y, Ksc

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