A.MMControl1.Visible= False B.MMControl1.Visible= True C.MMControl1.RecordVisible= False D.MMControl1.RecordVisible= True
A.前一首 B.錄制 C.彈出 D.播放
A.指定Back或Step命令后退或前進的幀數(shù)都為3 B.只有Back命令后退的幀數(shù)為3 C.只有Step命令前進的幀數(shù)為3 D.后退或前進的幀數(shù)都為6