ELECTRICITY 安全用电
安全用电主题教育
汇报人:ABC办公 汇报时间:20XX
03. 生活中的安全用电The user can demonstrate on a projector or puter
04. 雷电的危害和防范The user can demonstrate on a projector or puter
电的简单认识
The user can demonstrate on a projector or puter or print thepresentation and make it into a film to be used ina wider field
电的简单认识
生活中看到的“电”:雷电现象静电现象
自然界的物质里都含有一种很小的带电的粒子,叫电荷,电荷静止或杂乱无章运动时,不显电性,当电荷有序排列时,就显示出了电性,当电荷有序流动时,就产生了电流,人们发现电流可以帮我们干活.
02 电的危险
The user can demonstrate on a projector or puter or print thepresentation and make it into a film to be used in a wider field