Confucius in Qufu in Shandong Province. [ ]
A. born
B. is born
C. was born
D. has born
C
计瞳资料可以采用()指标进行计算。
A.频数分布
B.集中趋势
C.抽样误差
D.离散趋势
E.标准误差
寄生虫幼虫或无性生殖阶段所寄生的宿主称为
A.保虫宿主
B.终宿主
C.中间宿主
D.储蓄宿主
E.转续宿主