70.下列何者為系統靈敏度(system sensitivity)的單位表示?
(A)minutes/(counts•μCi)
(B) μCi /(minutes.counts)
(C)counts/(minutes•μCi)
(D)(counts•μCi)/minutes
答案:登入後查看
統計: A(43), B(359), C(1268), D(386), E(0) #2407889
統計: A(43), B(359), C(1268), D(386), E(0) #2407889