网元定时信号的来源主要有 。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30264' and id < 2448308 and id<>'2448308' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30264' and id > 2448308 and id<>'2448308' order by id asc limit 5