投标单位研究招标文件的重点应放在（）等方面。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24816' and id < 2121632 and id<>'2121632' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24816' and id > 2121632 and id<>'2121632' order by id asc limit 5