±坝设置防渗体的作用是（

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29436' and id < 2396675 and id<>'2396675' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29436' and id > 2396675 and id<>'2396675' order by id asc limit 5