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问题 多项选择题

在After Effects中如何将一段影片倒放？（）

A.Time Stretch

B.Time Remapping

C.Time-Reverse Keyframes

D.TimeDifference

答案

参考答案：A, B

填空题

我国照明电路的电压为______伏．家庭电路中，电灯开关与灯泡只能是______的（选填“并联”或“串联”）．电灯发光时消耗的是______能．
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填空题

下面的程序是由鼠标事件在窗体上画图，如果按下鼠标将可以画图，双击窗体可以清除所画图形。补充完整下面的程序。首先在窗体层定义如下变量：
Dim PaIntStart As Boolean
编写如下事件过程：
Private Sub Form_Load()
DrawWidth=2
ForeColor=vbGreen
End Sub
Private Sub Form_MouscDown(Button As Integer，Shift As Integer，_
X As Single，Y As Single)
[13]
End Sub
Private Sub Form_MouseMove(Button As Integer，Shift As Integer，_
X As Single，Y As Single)
If PaintStart Then
PSet(X，Y)
End If
End Sub
Private Sub Form_MouseUp(Button As Integer，Shift As Integer，_
X As Single，Y As Single)
[14]
End Sub
Private Sub Form_DblClick()
[15]
End Sub
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