DL/T 860标准中提供了（ ）服务。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29469' and id < 2398845 and id<>'2398845' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29469' and id > 2398845 and id<>'2398845' order by id asc limit 5