8 半值層（half value layer, HVL）與什一值層（tenth value layer, TVL）的關係為何？
(A)HVL = TVL - (ln2 / ln10)
(B)HVL = TVL - (ln10 / ln2)
(C)HVL = TVL × (ln10 / ln2)
(D)HVL = TVL × (ln2 / ln10)

答案：登入後查看
統計： A(1), B(3), C(29), D(82), E(0) #2172819