Physics Unit31: Nuclear Energy and Radiation (id: d0a04b440)

admin

本题目来源于试卷: Physics Unit31: Nuclear Energy and Radiation，类别为 Generic Physics

[单选题]
What is necessary toug 48s qm kh6dsnsp65* +ajsl4 stopl6cj b;.xsmvslbkc.lsz26;; beta particles?

A. air alone
B. paper
C. metal foil
D. thick metal


参考答案:  C


本题详细解析: 暂无