关于平均滞留时间MRT的描述，错误的是（  ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24975' and id < 2127573 and id<>'2127573' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24975' and id > 2127573 and id<>'2127573' order by id asc limit 5