假如增加一单位产量所带来的MC大于产量增加前的AVC,则在产量增加后AVC(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='1778' and id < 114213 and id<>'114213' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='1778' and id > 114213 and id<>'114213' order by id asc limit 5