68.下列何者不是PMT的元件構造?
(A)光陰極(photocathode )
(B)二次發射極(dynode)
(C)波高分析器(PHA)
(D)高壓供應器(high voltage supply )
答案:登入後查看
統計: A(87), B(162), C(1319), D(449), E(0) #2407887
統計: A(87), B(162), C(1319), D(449), E(0) #2407887