57.在近接治療植入射源中,下列那些系統的射源是均勻分布(uniform distribution of source)? ①Paterson-Parker system ②Quimby system ③Paris system
(A)僅①②
(B)僅①③
(C)僅②③
(D)①②③

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統計: A(166), B(117), C(528), D(283), E(0) #1050696

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