长期国债的偿还期限一般为（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30038' and id < 2432807 and id<>'2432807' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30038' and id > 2432807 and id<>'2432807' order by id asc limit 5