33.下列何種元件,只有當機器在電子射束模式下運轉時才會用到
(A)靶(target)
(B)監測游離腔(monitor chamber)
(C)整平濾片(flattening filter)
(D)散射箔片(scattering foil)
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統計: A(43), B(21), C(114), D(1723), E(0) #3065038
統計: A(43), B(21), C(114), D(1723), E(0) #3065038