吗啡急性中毒的特征包括（ ）。  

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30914' and id < 2487793 and id<>'2487793' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30914' and id > 2487793 and id<>'2487793' order by id asc limit 5