（）是SDLC的一个阶段，它的目标是了解并详述用户的需求。 ["设计阶段","维护阶段","实施阶段","分析阶段"] Sorry to have kept you waiting for so long.（） ["Not at all","Don 't say so","I don't think so","It doesn't matter"] （）是一组已命名的字符和段落格式的组合。 ["模板","样式","页面设置","项目符号"] （）把系统分解成一个逐渐细化的分层集合的建模技术。 ["关联图","DFD片段","外部实体","抽象水平"] 在综调系统中查找业务开通的历史工单，可通过以下几种方式查找（） ["工单编号","业务号码","开通系统工单号","购物车流水号"] 在内部市场化的环境下，结算主体就是（）市场主体。