函数 是偶函数， 是奇函数，则   （   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16551' and id < 1390166 and id<>'1390166' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16551' and id > 1390166 and id<>'1390166' order by id asc limit 5