[问答题] 简述城市化的四种模式。

使用基于用例的方法进行需求分析时不需要执行的步骤是（）。 ["确定用例","确定参与者","确定类的大小","用例之间的关系"] 全面贯彻“三个代表”思想，核心是（） ["坚持党的先进性","坚持与时俱进","坚持执政为民","坚持以人为本"] 盛唐山水田园诗派代表作家是（）和（）。 什么是数据？什么是信息？简述它们之间的联系和区别。 As an experienced technician, you are responsible for Technical Support. A customer calls to ask the best signal level and noise level for cell phone. How to respond?（） [" -40dBm signal and -90dBm noise"," -50dBm signal and -90dBm noise"," -30dBm signal and -90dBm noise"," -20dBm signal and -90dBm noise"] 简述城市化的四种模式。