双曲线x2a2-y2b2=1(a>0,b>0)的左,右焦点分别为F1,F2,在双

题型:选择题

问题:

双曲线
x2
a2
-
y2
b2
=1
(a>0,b>0)的左,右焦点分别为F1,F2,在双曲线右支上存在点P,满足|PF1|=k|PF2|,则此双曲线的离心率e的最大值为(  )
A.
k
k-2
B.
k+1
k-1
C.
k-1
k-2
D.
k
k-1
考点:双曲线的性质(顶点、范围、对称性、离心率)
题型:选择题

Jason is looking to purchase a 52 inch television. His friend Michael owns an electronic store and offers to sell him a television set having the required screen size for a particular price. Jason decides to take some further time to decide and see if he can obtain a further reduced price from another outlet. He subsequently receives a letter from Michael requesting that he take delivery of the television within a period of 15 days and that he pay the relative price he had offered him.Required:

(b) Explain whether the purported sale between Michael and Jason is deemed legally concluded. (5 marks)

题型:选择题

vSphere哪个版本提供分布式交换机功能?()

A.企业增强版

B.企业版

C.Essentials版

D.标准版

题型:选择题

恪守律师职业道德的意义怎样理解?

题型:选择题

中性粒细胞的毒性变化包括中毒颗粒、空泡变性、()、()。

题型:选择题

拟声

更多题库