分析性职业流行病学调查,不包括()
A.病例-对照研究
B.回顾性调查
C.队列研究
D.前瞻性研究
E.横断面调查
参考答案:E
Regulations require needs special diets the cooking manager in advance.
A.who; informs
B.whom; informed
C.whomever; inform
D.whoever; inform