疾病轮状模型的外环是指()
A.环境
B.遗传因子
C.宿主
D.特异病原体
E.病原微生物
参考答案:A
业务管理风险主要是指证券公司融资融券业务经营中因管理不善等原因导致的业务经营损失的可能性。 ( )
Just last week, for example, the World Health Organization (WHO) announced the disturbing disclosure that SARS may be pretty deadlier than previously believed.
A.very
B.far
C.especially
D.none