A.時(shí)間性B.規(guī)范性C.靈活性D.隨意性
A.會(huì)議發(fā)言擴(kuò)聲設(shè)備B.會(huì)議系統(tǒng)設(shè)備C.會(huì)議燈光設(shè)備D.會(huì)議翻譯設(shè)備
A.歡送會(huì)B.聯(lián)誼會(huì)C.酒會(huì)D.會(huì)議茶歇