常见的致龋微生物不包括 ["A．放线菌属","B．乳杆菌属","C．福赛类杆菌","D．变形链球菌","E．茸毛链球茵"]
菌斑的获得性膜结构的功能不包括 ["A．修复或保护釉质表面","B．影响微生物对牙面的附着","C．为菌斑微生物提供营养","D．为釉质提供有选择的渗透性","E．利于抗生素发挥作用"]
龋病时，牙体硬组织病理改变涉及 ["A．牙釉质","B．牙本质","C．牙骨质","D．牙釉质和牙本质","E．牙釉质、牙本质、牙骨质"]
牙髓塑化剂不易用于前牙的原因是 ["A．牙髓塑化剂抑菌作用低","B．牙髓塑化剂刺激作用强","C．塑化剂可以使牙质变色","D．不易于操作","E．前牙根管宽大"]
甲醛甲酚的作用有以下几方面，但除外 ["A．杀菌 ","B．诱导根尖闭合 ","C．去腐 ","D．除臭 ","E．镇痛"]
简述行政领导班子素质结构优化的主要内容。
