一、选题的确定在南湖公园,我被人民广场附近上的音乐喷泉的美景陶醉了。广场的工作人员介绍说,人工喷泉是由机器控制的,需要电力做驱动,为了节省能源,一般在节日或双休日的时候才开放。我想这么美丽的景色如果能时时开放,甚至在家里做一个小型喷泉就好了。从这一时刻起,我想自己设计一种自动喷泉(见图1),不需要电动机 First, the selection of topics in the South Lake Park, I was near the People’s Square musical fountain on the beautiful scenery intoxicated. Plaza staff said that the fountain is controlled by the machine, need electric power to drive, in order to save energy, usually on the holidays or weekends only open. I think such a beautiful view if it can be open from time to time, even at home to do a small fountain just fine. From this moment, I want to design an automatic fountain myself (see Figure 1), without the need for a motor