单项选择题 A junior risk analyst is modeling the volatility of a certain market variable and is trying to decide between EWMA and GARCH(1,1) models. Which of the following statements about the two models is correct?（ ） A.The EWMA model is a special case of the GARCH(1,1) model with the additional assumption that the long run volatility is zero.B.A variance estimated from the GARCH(1,1) model is a weighted average of the prior day's estimated variance and the prior day's squared return.C.The GARCH(1,1) model assigns a higher weight to the prior day's estimated variance than the EWMA model.D.A variance estimated from the EWMA model is a weighted average of the prior day's estimated variance and the prior day's squared return.

单项选择题 长生殿更为人所知的是唐玄宗和杨贵妃的故事，这里曾是他们七夕盟誓之地。而实际上长生殿最早建于唐代天宝六年（公元748年），也被称为七圣殿，为供奉唐代自高祖李渊、太宗李世民、高宗李治、中宗李显、睿宗李旦及追封的太上玄元皇帝老子李耳以及谁共七位皇帝灵位之地？A.世祖李昺B.大圣皇后武则天C.义宗李弘D.代宗李豫

多项选择题 助推职场成功的三大技能有(  ) A.专业知识技能B.自我管理技能C.可迁移技能D.潜能