59.依2007年國際放射防護委員會(ICRP)將每年曝露放射線的危險性分類,牙醫師屬於那一類別?
(A)classified worker
(B)non-classified worker
(C)classified general public
(D)non-classified general public
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統計: A(215), B(820), C(62), D(58), E(0) #2181753
統計: A(215), B(820), C(62), D(58), E(0) #2181753