进程控制块是描述进程状态和特性的数据结构，一个进程 。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30160' and id < 2440231 and id<>'2440231' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30160' and id > 2440231 and id<>'2440231' order by id asc limit 5