The nurse is caring for a client who recently underwent a tracheostomy. The first priority when caring for a client with a tracheostomy is （）.

A．helping him communicate.

B．keeping his airway patent.

C．encouraging him to perform activities of daily living.

D．preventing him from developing an infection.

公共关系观念主要有（）

A.形象观念

B.互惠观念

C.协调观念

D.公众观念

E.传播观念