A.視覺B.繪圖C.觸覺D.聽覺
A.對(duì)利用者的共享性B.對(duì)物質(zhì)載體的獨(dú)立性C.對(duì)認(rèn)知主體的相對(duì)性D.時(shí)效性
A.數(shù)據(jù)庫(kù)B.樣品C.圖紙D.書籍