下列属于单务合同的是 （   ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26674' and id < 2220435 and id<>'2220435' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26674' and id > 2220435 and id<>'2220435' order by id asc limit 5