颌面部间隙感染来自()
A.牙槽、牙周、冠周炎症
B.下颌骨髓炎
C.颌面淋巴结炎
D.涎腺炎
E.颌部外伤
参考答案:A, B, C, D, E
________ countries and areas have been seriously hit by the typhoon. Now people in the affected
areas are ______food and fresh water.
A.A number of; lacking in
B.The number of; lacking in
C.A number of; lacking of
D.The number of; lacking of
下列说法中符合巴甫洛夫关于神经症和精神病的描述的是()
A、是大脑结构和功能这两个基本因素的相互关系
B、是大脑兴奋和抑制这两个基本神经过程的冲突
C、是脑的新陈代谢障碍
D、是弱的、经常性的精神刺激
E、以上都对