什麽叫產生動力???
回答 (1)
2010-01-13 12:18 am
✔ 最佳答案
You can go to ask your science teacher or surf the Net to find the answer! I don't know the answer. Find it yourself when you don't know something. Don't always waste your masks!
參考: 自己
收錄日期: 2021-04-19 21:05:06
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100103000051KK01115