19.下列何種加速器較少被用來當作現今臨床質子治療的加速設備?
(A)cyclotron
(B)synchrotron
(C)synchrocyclotron
(D)linear accelerator
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統計: A(97), B(85), C(93), D(761), E(0) #3380970
統計: A(97), B(85), C(93), D(761), E(0) #3380970