問題詳情
1.距離鈷-60加馬射源處一公尺的輻射劑量率,約是距離為兩公尺處的
(A)2倍
(B)4倍
(C)1/2倍
(D)1/4倍。
(A)2倍
(B)4倍
(C)1/2倍
(D)1/4倍。
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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