A. hand in B. hand off C. hand over D. hand on
A. punctuality. B. tardiness C. advent D. regularity
A. circles B. communities C. sections D. constituency
A. on B. in C. at D. to
A. ρ的取值为正表明两种证券的收益有同向变动倾向 B. ρ的取值总是介于-1和1之间 C. ρ的值为负表明两种证券的收益有反向变动的倾向 D. ρ=1表明两种证券间存在完全的同向的联动关系 E. ρ的值为零表明两种证券之间没有联动倾向