有助于鉴别伤寒、副伤寒

A. 便于家属探视，交谈
B. 避免声、光刺激
C. 靠近监护室
D. 保持病室清洁
E. 加强安全防护措施

A. To teaching , to advertising
B. Teaching, t advertise
C. Teaching , to advertising
D. To teach , an advertising

A. 广谱抗菌作用
B. 抑制胶原酶活性
C. 使根面轻度脱矿
D. 牙周袋内局部浓度高
E. 以上都是