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 also known y:xdi+vi0 24wrj)mnv,mwbo. a*o 5eb:rm41g zh.nlscgsg l *1s

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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