如果时间序列不存在季节变动，则各期的季节指数应（ ）。[安徽财经大学2012涵]

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30464' and id < 2461435 and id<>'2461435' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30464' and id > 2461435 and id<>'2461435' order by id asc limit 5