首页/ 题库 / [单选题]1990年某市为了调查老年人中多发病的分的答案

1990年某市为了调查老年人中多发病的分布情况,对该市7个区的9个不同地段抽取60岁及以上的老年人7458例进行调查,这是()。

单选题
2021-12-27 23:03
A、分析性研究
B、抽样调查
C、普查
D、筛检
E、发病率调查
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正确答案
B

试题解析

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