本题目来源于试卷: Physics Unit32: Elementary Particles，类别为 Generic Physics
[单选题]
A positively charged el-y g eeimht*h7fqe)f 4ycs8;z 10azf*ectron iq phr . 3xoye/z2db/ .rpy )dv5++szlhs
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
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Post time 2024-1-22 02:15:01