55.依據輻射醫療曝露品質保證標準,CT simulator月品質保證之檢查床水平檢測(leveling of CT- scanner tabletop),其橫向水平角度應為幾度以下?
(A)0.5
(B)1
(C)1.5
(D)2
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統計: A(426), B(328), C(58), D(138), E(0) #3380606
統計: A(426), B(328), C(58), D(138), E(0) #3380606