腹膜后超声检查前准备正确的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31780' and id < 2540836 and id<>'2540836' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31780' and id > 2540836 and id<>'2540836' order by id asc limit 5