Physics Unit30: Nuclear Physics and Radioactivity (id: 7a24738c1)

本题目来源于试卷: Physics Unit30: Nuclear Physics and Radioactivity，类别为 国际高中通用物理

[单选题]
Gamma rays can penetraumtyxh ) f;swj2o7: n-ty i1am ruy)x,dh1nufg/629ry e

A. air only.
B. a piece of paper.
C. several millimeters of aluminum.
D. several centimeters of lead.


参考答案:  D


本题详细解析: 暂无

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