题目内容

比较两地区的肺癌死亡率时,进行率的标准化,其目的是( )

A. 使大的率变小
B. 使小的率变大
C. 使率能更好的代表实际水平
D. 消除资料内部构成不同的影响,使率具有可比性
E. 起加权平均的作用

查看答案
更多问题

计算乙肝疫苗接种后血清学检查的阳转率,分母是( )

A. 乙肝易感人数
B. 平均人口数
C. 乙肝疫苗接种人数
D. 乙肝患者人数
E. 乙肝疫苗接种后的阳转人数

[音频]The speaker described three of the sculptures on page 23. One was not mentioned. Number the pictures from i to 3 in the order they were described.a peaceb Let Us Beats Swords into Ploughsharesc Non-violenced Spoonbridge and Cherry

[音频]Which of the following names is not an example of a place name?

A. John Hill
B. John Baker
C. Emma Bridges

Which of the following names is not an example of an occupational name?

A. Tailor
B. Peterson
C. Baker

答案查题题库