49.為準確量測表面劑量(surface dose),會使用如圖所示的游離腔,其名稱是:
(A)parallel-plate chamber
(B)extrapolation chamber
(C)Advanced Markus chamber
(D)disk chamber
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統計: A(592), B(629), C(106), D(77), E(0) #3135836
統計: A(592), B(629), C(106), D(77), E(0) #3135836