Physics Unit30: Nuclear Physics and Radioactivity (id: ad25fc153)

本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 通用国际物理

[单选题]
An a particle is als twk0 hrq6k4e8 f)uc.iod d blc;en4;./ps bu-yj 8 lmzpx;j;y9 known as

A. an electron.
B. a positron.
C. a helium nucleus.
D. a photon.


参考答案:  C


本题详细解析: 暂无

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