Physics Unit32: Elementary Particles (id: cd0666cdd)

本题目来源于试卷: Physics Unit32: Elementary Particles，类别为 国际高中通用物理

[单选题]
A positively charged sj s- d5bo1jssa*k3 (velefq*l1 9fbn; c9g- dcegctron is

A. called a proton.
B. called a positron.
C. also called an electron.
D. not found in nature.


参考答案:  B


本题详细解析: 暂无

微信扫一扫，分享更方便