采用静态评价方法对互斥型投资方案进行经济效果评价，经常不能充分反映（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27079' and id < 2244538 and id<>'2244538' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27079' and id > 2244538 and id<>'2244538' order by id asc limit 5