是不是所有放射性物質，都要用核反應堆製造？
回答 (2)
2006-12-09 3:00 am
✔ 最佳答案
No, some of the element naturally emits radiation.For example uranium.
2006-12-10 8:43 pm
correct answer, but plz elaborate more next time
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https://hk.answers.yahoo.com/question/index?qid=20061208000051KK02483