无形资产的特征不包括（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30642' and id < 2473584 and id<>'2473584' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30642' and id > 2473584 and id<>'2473584' order by id asc limit 5