简述用力肺活量的测定方法。

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,Ksc

C．"..\Data1.txt"For Random As #1 Put #1,i,Ksc

D．"..\Data1.txt"For Random As #1 Put #1,Y,Ksc