Brian

分數

604

最佳解答率

69.00%

等級

Lv 2

發問 2 回答 7

2007-04-19 8:05 am

Where can I get a carbon brush for a d.c. generator? (15pts)

2006-11-09 1:17 am

What is the accurate half life of Carbon-14?

1

本頁收錄日期: 2021-04-12 23:53:24
總收錄問題: 2 / 2 (收錄率: 100.00%)
總收錄回答: 7 / 13 (收錄率: 53.85%)