水蛭与虻虫均具有的功效是(  )。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25830' and id < 2169223 and id<>'2169223' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25830' and id > 2169223 and id<>'2169223' order by id asc limit 5