题目

图甲是一种车载空气净化器，其工作过程如图乙所示．受污染的空气被吸入后，颗粒物进入电离区带上电荷，然后在集尘器上被带电金属捕获，其原理是 _． 答案：【答案】异种电荷相互吸引【解析】试题分析：同种电荷相互排斥，异种电荷相互吸引；解：颗粒物所带电荷与集尘器带电金属网所带电荷电性相反，异种电荷相互吸引，因此颗粒物被电网捕获；故答案为：异种电荷相互吸引；根据句意及首字母提示补全单词。1. With the d_____ of China, all the children can go to school. 2. The two sides failed to reach a_____. 3. Some spaceships have gone b_____ the solar system. 4. We are here to p_____ the public with a service. 5. What's the i_____ of television on children?