Physics Unit30: Nuclear Physics and Radioactivity (id: 04ff14276)

本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 国际高中通用物理

[单选题]
The atomic mass unit is desnw3x j 0jd//afinex45 e)9q gapeotw+2 jmd as

A. the mass of a proton.
B. the mass of an electron.
C. the mass of a hydrogen-1 atom.
D. one twelfth the mass of a carbon-12 atom.


参考答案:  D


本题详细解析: 暂无

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