【简答题】路由器的路由功能一般分为()态路由和()态路由。
【判断题】零件加工表面上具有的较小间距和峰谷所组成的宏观几何形状不平的程度叫做表面粗糙度。
【判断题】零件加工表面上具有的较小间距和峰谷所组成的微观几何形状不平的程度,叫表面粗糙度。
【单选题】He often_______ tennis with his friends. Now they_______ tennis at school.
【判断题】零件加工表面上具有的较小间距和峰谷所组成的微观几何形状不平的程度叫做表面粗糙度。
【单选题】He usually plays _____ piano on Saturdays and plays _____ tennis on Saturdays. [ ]
【单选题】Jimmy is only a second rate tennis player ,but he is always ( ) how well he plays .