本题目来源于试卷: Atomic Model，类别为 美国物理杯赛(Physics Bowl)
[单选题]
06.47: The sub-atomic mmdkma wb9gq9 3 xcn53n* 5sn:lat /yn;ake-up of a p :4 83 webjbtigvy3u.z5pjp,broton is
A. 2 up quarks and a down quark
B. 2 down quarks and an up quark
C. 1 up quark, 1 down quark, and 1 top quark
D. 1 up quark, 1 strange quark, and 1 bottom quark
E. 2 strange quarks and 1 charmed quark
参考答案: A
本题详细解析:
暂无
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