下列生理活动改变是由a受体介导的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29021' and id < 2361715 and id<>'2361715' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29021' and id > 2361715 and id<>'2361715' order by id asc limit 5