变压器的铁芯结构一般分为心式和壳式两种。（）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32654' and id < 2596345 and id<>'2596345' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32654' and id > 2596345 and id<>'2596345' order by id asc limit 5