54.下列何者可以整平病人的不規則體表輪廓,使得劑量均勻並且仍保有皮膚免除效應(skin sparing effect)?
(A)bolus
(B)bolus layer
(C)buildup bolus
(D)compensator
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統計: A(479), B(37), C(67), D(1236), E(0) #2867212
統計: A(479), B(37), C(67), D(1236), E(0) #2867212