阿摩線上測驗
77.發生率密度值為何？
(A)0.25 per dog-month at risk
(B)0.5 per dog-month at risk
(C)0.05 per dog-month at risk
(D)0.067 per dog-month at risk
答案：登入後查看
統計： A(307), B(210), C(990), D(188), E(0) #2742437
統計： A(307), B(210), C(990), D(188), E(0) #2742437
