依民法理论，物权的核心是 (  )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26673' and id < 2220345 and id<>'2220345' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26673' and id > 2220345 and id<>'2220345' order by id asc limit 5