换热器型号 AKT600/1200—2. 5/1. 6—90—6/25—4 II 表示（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24818' and id < 2121711 and id<>'2121711' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24818' and id > 2121711 and id<>'2121711' order by id asc limit 5