PMU装置的动态数据的保存时间不少于（ ）天。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29468' and id < 2398916 and id<>'2398916' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29468' and id > 2398916 and id<>'2398916' order by id asc limit 5