下列哪些行为构成妨碍公务罪？（ )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31905' and id < 2550720 and id<>'2550720' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31905' and id > 2550720 and id<>'2550720' order by id asc limit 5