除遗传性牙龈纤维瘤病以外,单纯遗传因素不会引起牙周疾病,但某些遗传因素可增加宿主易感性,可能受宿主易感性影响的是() ["青春期龈炎","坏死性溃疡性牙周炎","菌斑性龈炎","侵袭性牙周炎和重度牙周炎","慢性牙周炎"]
能引起人畜共患病的病原体是() ["梅毒螺旋体","霍乱弧菌","布氏杆菌","白喉杆菌","淋球菌"]
鸡冠壶
外感风寒表证兼气滞胸闷不舒者,首选的药物是() ["A.防风","B.白芷","C.紫苏","D.生姜","E.麻黄"]
简述输送机巷道行走安全注意事项。
怎样鉴别真假岩屑?