目前列管式换热器采用较多的是（ ）折流板。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24910' and id < 2125197 and id<>'2125197' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24910' and id > 2125197 and id<>'2125197' order by id asc limit 5