52.補償器(compensator)宜置於距離病人體表幾公分以上?
(A)5
(B)10
(C)15
(D)20
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統計: A(108), B(186), C(347), D(1463), E(0) #2625327
統計: A(108), B(186), C(347), D(1463), E(0) #2625327