2. 计算机
  3. (21)put　computers　to　practical　business　use,　but　below　the　surface　it　is　the　heart　of　an(22)　-　the　kernel　-　that　provides　the　te

(21)put　computers　to　practical　business　use,　but　below　the　surface　it　is　the　heart　of　an(22)　-　the　kernel　-　that　provides　the　te

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问题 (21)put　computers　to　practical　business　use,　but　below　the　surface　it　is　the　heart　of　an(22)　-　the　kernel　-　that　provides　the　technical　wizardry　to　juggle　multiple　programs,　connect　to　networks　and　store(23).A　traditional　kernel　provides　all　the　functions　for　applications.　The　kernel(24)　memory,　I/O　devices　and　parcels　out　processor　time.The　kernel　also　supports(25)　and　fault　tolerance,　which　is　the　ability　to　recover　automatically　when　parts　of　the　system　fail.
选项 A、manages
B、manage
C、managed
D、managing
答案A
解析
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