急性心包炎按渗出的主要成分可分为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30915' and id < 2487889 and id<>'2487889' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30915' and id > 2487889 and id<>'2487889' order by id asc limit 5