向对方发送电子邮件时，对方不一定要开机（  ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='52873' and id < 3338293 and id<>'3338293' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='52873' and id > 3338293 and id<>'3338293' order by id asc limit 5