以下是固定桥禁忌证的是（）。 A.缺失侧基牙有慢性根尖周炎 B.缺失侧基牙有Ⅰ度松动

清朝一个秀才清晨起来读书，忽见风吹书页翻动，猛然来了诗兴，吟诗一句“清风不识字，何故乱翻书？”结果后来被官府捉拿斩首。这一事件反映了清朝的

A．闭关锁国政策

B．大兴文字狱

C．设军机处

D．建立中央册封制度

Questions refer to the following information.

In a marketing survey for products A, B, and C, 1,000 people were asked which of the products, if any, they use. The three circular regions in the diagram above represent the numbers of people who use products A, B, and C, according to the survey results. Of the people surveyed, a total of 400 use A, a total of 400 use B, and a total of 450 use C.
How many of the people surveyed use exactly one of the products

A．75

B．100

C．150

D．250

E．(E) 325

童年患麻疹，流感，百日咳，后继发支气管肺炎，对下列哪种疾病诊断具有较重要的意义：（）

A.肺结核

B.支气管肺炎

C.支气管扩张症

D.肺脓肿

E.支气管哮喘

下列哪项不是片剂稳定性所要考察的项目（）

A.吸湿性

B.性状

C.含量

D.有关物质

E.溶出度

城市化