11 下列矯正裝置中,何者不屬於可撤式裝置?
(A)功能活化器(activator)
(B)哈立維持器(Hawley retainer)
(C)舌側牙弓維持器(lingual holding arch)
(D)牙齒定位器(tooth positioner)
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統計: A(4), B(9), C(35), D(9), E(0) #3498199
統計: A(4), B(9), C(35), D(9), E(0) #3498199