财务效益和费用估算应遵循（ ）的原则。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27080' and id < 2244853 and id<>'2244853' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27080' and id > 2244853 and id<>'2244853' order by id asc limit 5