A.O B.H C.B D.D
A.可隨機讀寫數(shù)據(jù)、斷電后數(shù)據(jù)將全部丟失 B.可隨機讀寫數(shù)據(jù)、斷電后數(shù)據(jù)將部分丟失 C.只能順序讀寫,斷電后數(shù)據(jù)都不丟失 D.只能順序讀寫,斷電后數(shù)據(jù)將全部丟失
A.BackspaceB.ShiftC.Caps LockD.Num Lock