鲁班发明锯子是借助茅草的启示，说明解决问题受（ ）影响。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30645' and id < 2471198 and id<>'2471198' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30645' and id > 2471198 and id<>'2471198' order by id asc limit 5