从中药的水提取液中萃取三萜皂苷，一般 选用的溶剂是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29779' and id < 2418199 and id<>'2418199' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29779' and id > 2418199 and id<>'2418199' order by id asc limit 5