49.下列何種器官在臨床放射治療的副作用評估,其體積效應最小?
(A)肺
(B)心臟
(C)脊髓
(D)腎
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統計: A(189), B(324), C(886), D(340), E(0) #1382428
統計: A(189), B(324), C(886), D(340), E(0) #1382428