A.機器語言 B.高級程序設(shè)計語言 C.數(shù)據(jù)庫管理系統(tǒng) D.BASIC和FORTRAN
A.11100001 B.11111110 C.10000000 D.11111111
A.可隨機讀取數(shù)據(jù),且斷電后數(shù)據(jù)不會丟失 B.可隨機讀寫數(shù)據(jù),斷電后數(shù)據(jù)將全部丟失 C.只能順序讀寫數(shù)據(jù),斷電后數(shù)據(jù)將部分丟失 D.只能順序讀寫數(shù)據(jù),且斷電后數(shù)據(jù)將全部丟失