A.<33Kbps B.<2Mbps C.<6/16Mbps D.<10/100Mbps
A.數(shù)據(jù)會(huì)議 B.音頻圖形會(huì)議 C.圖形會(huì)議 D.桌面會(huì)議
A.2倍 B.4倍 C.6倍 D.8倍