从创新的规模及对系统的影响程度来考査，创新分为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31821' and id < 2543432 and id<>'2543432' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31821' and id > 2543432 and id<>'2543432' order by id asc limit 5