如果由一个企业生产一系列的产品比由许多企业各自分别生产要合算，就存在：(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='1781' and id < 114532 and id<>'114532' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='1781' and id > 114532 and id<>'114532' order by id asc limit 5