.一个完整的计算机系统应包括(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69455' and id < 4498001 and id<>'4498001' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69455' and id > 4498001 and id<>'4498001' order by id asc limit 5