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搜题
【单选题】
设随机变量X的概率分布为: ,则下列表示错误的是( )
A.
F(-1)=0.1
B.
F(1.5)=0.6
C.
F(3)=1
D.
F(0.5)=0.3
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举一反三
【单选题】集合P={0,1,2,3},Q={-2,-1,0,1,2},则P∩Q= [     ]
A.
{1,2}
B.
{0,1,2}
C.
{-1,0,1,2}
D.
{-2,-1,0,1,2,3}
【多选题】What technolgies forced the development of multimedia technology?
A.
Storage technology
B.
Compression technology
C.
Network technolgy
D.
Large Scale Integrate Circuit
【单选题】物业服务企业组织机构设置的影响因素中,外部环境主要包括物业管理的行业特点、人力资源条件、( )、客户、市场特点、物业管理的政策法规和宏观经济形势等因素。
A.
产品特点
B.
管理知识
C.
设备
D.
技术
【单选题】你想购买些纪念品带回国给家人作礼物,希望店员能给些你意见,可以这样向店员说____ 。
A.
What souvenirs can you recommend?
B.
What do you recommend as a souvenir from this country?
C.
I want to buy some souvenirs.Do you have any suggestions?
D.
All of the other options.
【单选题】若U={-2,-1,0,1,2},M={-1,0,1},N={-2,-1,2},则 =( )
A.
B.
{0,1}
C.
{-2,0,1,2}
D.
{-1}
【简答题】设V=L(α 1 ,α 2 ,α 3 ),其中α 1 =(1,0,0,0,1),α 2 =(1,-1,0,1,0),α 3 =(2,1,1,0,0),求V的一组标准正交基.
【单选题】设全集U={-1,0,1,2,3},A={-1,0},B={0,1,2},则(C U A)∩B = [     ]
A.
{0}
B.
{-2,-1}
C.
{1,2}
D.
{0,1,2}
【单选题】What is the topic of the article?
A.
What can nature contribute to technology?.
B.
Environment can sometimes block the progress of technology.
C.
Technologies of all kinds should serve the natural environment.
D.
Environment deserves the most attention in the development of technologies.
【简答题】设全集U={-1,0,1,2,3},A={-1,0},B={0,1,2},则(CUA)∩B =(   ) (A) {0}          (B) {-2,-1}       (C) {1,2 }         (D) {0,1,2}
【简答题】设V=L(α 1 ,α 2 ,α 3 ),其中α 1 =(1,0,0,0,1),α 2 =(1,-1,0,1,0),α 3 =(2,1,1,0,0),求V的一组标准正交基.
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