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
Open 【15】
Y=3. 14159 / 180
For i=1 To 90
Ksc. K=i
Ksc. Sinx = Sin ( i * Y)
Ksc. Cosx = Cos ( i * Y)
Put #2, i, Ksc
Next i
Close #2
End Sub

在木工房、煤气站、液化气站等易燃易爆场所（）架设临时线路。

A、尽量避免

B、允许

C、不允许