本题目来源于试卷: Physics Unit32: Elementary Particles，类别为 Generic Physics
[单选题]
A distinctive feature odzf 8e (ij2rws(4 wcw.q nl(c i4/v/vlf e+f2p sq7awt tqt*.l0quarks is that they
A. have zero rest mass.
B. have zero charge.
C. have fractional electric charge.
D. are always observed singly, since they do not readily interact with other particles.
参考答案: C
本题详细解析:
暂无
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Post time 2024-1-22 02:15:01