肝脏基本的结构功能单位是（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28453' and id < 2324258 and id<>'2324258' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28453' and id > 2324258 and id<>'2324258' order by id asc limit 5