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 国际高中通用物理

[单选题]
An a particle is also knowzqd7upn 4gj.gy grtvt ,g7(96n asnuze,a;x3g/3 m kz56qix m(bz brmn,9

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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