公文发文字号的构成要素有（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31818' and id < 2543177 and id<>'2543177' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31818' and id > 2543177 and id<>'2543177' order by id asc limit 5