.20GB的硬盘表示容量约为(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69454' and id < 4497932 and id<>'4497932' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69454' and id > 4497932 and id<>'4497932' order by id asc limit 5