从经济理论上讲，资金存在时间价值的原因主要包括 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30225' and id < 2445080 and id<>'2445080' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30225' and id > 2445080 and id<>'2445080' order by id asc limit 5