Physics Unit30: Nuclear Physics and Radioactivity (id: 347213dd2)

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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]
During $b+$ decay

A. a neutron is transformed to a proton.
B. a proton is transformed to a neutron.
C. a neutron is ejected from the nucleus.
D. a proton is ejected from the nucleus.


参考答案:  B


本题详细解析: 暂无