流动性溢价理论认为，长期债券的利率应等于（ ）。 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27077' and id < 2246062 and id<>'2246062' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27077' and id > 2246062 and id<>'2246062' order by id asc limit 5