每年应根据流行病学调查的结果，补充或更换疫苗的抗原组成。
（）建设与人民幸福安康息息相关，要努力使全体人民学有所教、劳有所得、病有所医、老有所养、住有所居，推动建设和谐社会。 ["文化","经济","社会","精神"]
A client is searching for an access point （AP）. What is the correct process order that the client and access point go through to create a connection？（） ["probe request\/response， authentication request\/response， association request\/response","association request\/response， authentication request\/response， probe request\/response","probe request\/response， association request\/response， authentication request\/response","association request\/response， probe request\/response， authentication request\/response"]
声母
土壤耕性
发展中国家应该怎样缩短同发达国家的知识差距？
