从客户等级来看，（ ）客户范围相对较广，但服务种类相对较窄。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26926' and id < 2236519 and id<>'2236519' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26926' and id > 2236519 and id<>'2236519' order by id asc limit 5