搜题请搜索小程序“爱下问搜题”
问题 选择题

设（3-x）5=a0+a1（x-1）+a2（x-1）2+…+a5（x-1）5，那么a0+a2+a4的值为（　　）

A．123

B．122

C．246

D．244

答案

x=2时，（3-2）5=a0+a1+a2+a3+a4+a5；x=0时，（3-0）5=a0-a1+a2-a3+a4-a5，

∴a0+a2+a4=

1+35
2
=122

故选B．

单项选择题

Although the bulk of industry resources and energies have focused on developing the fastest (1) or slickest (2) more and more mindshare is turning to the evolution of the computer interface. Advancements in the areas of input devices, (3) processing and vitual reality could lead to fundamental changes in the way human and computer interact. The technological battlefield of the future will be adding layers between the user and the raw machine to make the (4) as invisible as possible. (5) represents the next evolutionary step for the interface.

5（）

A．application software

B．eye-tracking device

C．application programs

D．vitual reality
查看答案
多项选择题

非比例再保险合同中，其责任恢复条款规定的责任恢复加费方法，一般包括（）等。

A．按原保费的10%加费恢复责任

B．按原保费的50%加费恢复责任

C．按原保费的70%加费恢复责任

D．按原保费的100%加费恢复责任

E.按原保费的20%加费恢复责任
查看答案