問題詳情
【題組】48. what does " cross-sectional study " mean?
(A) to study the cross interaction betweentwo factors
(B) to investigate the surface of a specific material
(C) a study refers totissue section based diagnosis
(D) to collect and analyze data from many differentindividuals at a single point in time.
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增