具有主液和泌别清浊作用的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28771' and id < 2345754 and id<>'2345754' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28771' and id > 2345754 and id<>'2345754' order by id asc limit 5