● 以下 4 种编码方式中,属于不归零编码的是 (19) 。
查看答案
A ) Private Sub Text1__KeyPress (KeyAscii AS Integer )
If KeyAscii=13 Then ‘ 回车符的 ACSII 码是 13
a=Val (Text1 )
If a>=0 or a<=100 Then
Text2.SetFocus
Else
Text1. SetFocus : MsgBox (“ 分数错 ” )
End If
End If
End Sub
B ) Private Sub Text1__KeyPress (KeyAscii AS Integer )
If KeyAscii=13 Then ‘ 回车符的 ACSII 码是 13
a=Val (Text1 )
If a>=0 And a<=100 Then
Text1.SetFocus
Else
Text2. SetFocus : MsgBox (“ 分数错 ” )
End If
End If
End Sub
C ) Private Sub Text1__KeyPress (KeyAscii AS Integer )
If KeyAscii=13 Then ‘ 回车符的 ACSII 码是 13
a=Val (Text1 )
If a<0 And a>100 Then
Text2.SetFocus
Else
Text1. SetFocus : MsgBox (“ 分数错 ” )
End If
End If
End Sub
D ) Private Sub Text1__KeyPress (KeyAscii AS Integer )
If KeyAscii=13 Then ‘ 回车符的 ACSII 码是 13
a=Val (Text1 )
If a>=0 And a<=100 Then
Text2.SetFocus
Else
Text1. SetFocus : MsgBox (“ 分数错 ” )
End If
End If
End Sub
Is the average temperature of Shenyang in summer _________?
[A] like Chicago
[B]like it in Chicago
[C] like the one of Chicago
[D] like that of Chicago
[A] served
[B] removed
[C] shared
[D] offered
● 下面 4 种编码方式中属于差分曼彻斯特编码的是 (15) 。