Simple chargers of this type require manual disconnection at the end of the charging, or may have a timer to cut off charging at a fixed time.此类简单充电器在充电结束时需要手动断开连接,或者需要一个定时装置在设定的时间断开充电电流。
【简答题】阅读理解。 Dear Zhang Hua, Have you ever been to Thailand? It is a country in Southeast Asia. I've been in Thailand for a few days with my parents. We are here for a holiday. Now we are staying in Bangkok(...