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47. 一個原子質量單位(amu)相當於多少公斤? (A) (B) (C) (D)
問題詳情
47. 一個原子質量單位(amu)相當於多少公斤?
(A)
(B)
(C)
(D)
參考答案
答案:A
統計:A:39,B:4,C:1,D:0,E:0
難度:非常簡單
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