题目内容
设计在f1=50HZ电源上运行的三相感应电动机现改为在电压相同频率为60HZ的电网上，其电动机的（）。
查看答案
搜索结果不匹配？点我反馈
更多问题
异步电机直接启动时候的特点是启动电流大但是启动转矩不大
异步电机直接启动时候的特点是启动电流大且启动转矩也很大。
Task 1In giving a business presentation,many speakers think thatif their idea is strong,their audience will getit readily. They feel discouraged when the audience is unable to understand their presentations.Thathappens a lot especially when technical experts are invited to make a product presentation to a group ofusers.What can we do to make a business presentation easier to understand? In my view,good presentationshave always been simple and visual. In an effective business presentation,the fewer the points,the betterthe message gets passed on.You focus on the depth of coverage instead of the width(广度）of coverage.Additionally,you make your ideas visual and relevant, so the message is understood better and rememberedlonger.Great business presenters relate their ideas and concepts to their audience by using simple,powerfuldiagrams instead of relying on text-based slides. In fact, drawing diagrams forces a presenter to make theidea clear even at the preparation stage. It is impossible to draw a diagram when you are not clear about anidea. When your idea is clear, it is easier to transfer it. Most audiences understand a diagram faster andremember it longer. This possibly explains why most of the memorable presentations have been visual innature.36. Many speakers believe that the stronger their idea,____________.
37. Why are you advised to give fewer points in your presentation?
微信支付 
支付宝支付