MMS协议可以完成的功能有（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29469' and id < 2398867 and id<>'2398867' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29469' and id > 2398867 and id<>'2398867' order by id asc limit 5