問題詳情
40.若要同時屏蔽中子和加馬射線,下列何者效果最佳?
(A) 壓克力
(B) 混凝土
(C) 鉛
(D) 石墨
(A) 壓克力
(B) 混凝土
(C) 鉛
(D) 石墨
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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