软件生命周期中所花费用最多的阶段是（    ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='57806' and id < 3657172 and id<>'3657172' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='57806' and id > 3657172 and id<>'3657172' order by id asc limit 5