73.平行對照(parallel opposed)25 cm厚的均質物體,下列那一種光子射束在入射與出射兩端
造成較高的劑量?
(A)60Co
(B)6 MV X-ray
(C)10 MV X-ray
(D)25 MV X-ray
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統計: A(980), B(61), C(24), D(327), E(0) #1041481
統計: A(980), B(61), C(24), D(327), E(0) #1041481