函数f(x)＝x 2＋mx＋1的图象关于直线x＝1对称的充要条件是（  ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16196' and id < 1362702 and id<>'1362702' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='16196' and id > 1362702 and id<>'1362702' order by id asc limit 5