楔形板的作用是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29312' and id < 2385704 and id<>'2385704' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29312' and id > 2385704 and id<>'2385704' order by id asc limit 5