在息税前利润为正的前提下，经营杠杆系数与之保持同向变化的闽素 有（

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25013' and id < 2129858 and id<>'2129858' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25013' and id > 2129858 and id<>'2129858' order by id asc limit 5