A.按Enter鍵 B.按Ctrl+Enter鍵 C.按F5鍵 D.按Ctrl+Shift+Enter鍵
A.Excel B.Word C.Powerpoint D.Frontpage
A.模擬化聲音B.數(shù)字化聲音C.壓縮的數(shù)字聲音D.數(shù)字化視頻