当以太网检测到冲突时，会发出一个（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29470' and id < 2398760 and id<>'2398760' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29470' and id > 2398760 and id<>'2398760' order by id asc limit 5