题型:判断题 下面哪种情况不属于拔牙适应证()A.严重龋坏不能治疗的牙B.晚期牙周病,牙周骨组织吸收严重,极为松动的牙C.反复发生冠周炎,或引起邻牙牙根吸收、龋坏的阻生牙D.成人牙列中滞留的乳牙,无松动、下方恒牙先天缺失E.因正畸治疗需要减数的牙 查看答案
题型:判断题 ()of the following messages is allowed to be transmitted on the radiotelephone without the authority of the Master.A.Urgency signalB.Safety signalC.Distress signalD.None of the above 查看答案