Physics Unit30: Nuclear Physics and Radioactivity (id: 43eb64f59)

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本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 Generic Physics

[单选题]
A b- particle is also b.6:lno : qhw -7to,hfyuyjn;kn2sqb yck03opu0 mxk0p) 3ew3 zown as

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


参考答案:  A


本题详细解析: 暂无