20 利用單一照野治療淺部腫瘤時,下列何種射束的射質最不恰當?
(A) superficial beams
(B) orthovoltage beams
(C) electron beams
(D) megavoltage photon beams
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統計: A(12), B(30), C(19), D(380), E(0) #1058995
統計: A(12), B(30), C(19), D(380), E(0) #1058995