重复接地的作用分别是（  ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69524' and id < 4504321 and id<>'4504321' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69524' and id > 4504321 and id<>'4504321' order by id asc limit 5