设全集U={1,2,3,4,5},A={1,3,5},则CUA的所有非空子集的个

题型:选择题

问题:

设全集U={1,2,3,4,5},A={1,3,5},则CUA的所有非空子集的个数为(  )

A.4

B.3

C.2

D.1

考点:集合的含义及表示集合间交、并、补的运算(用Venn图表示)
题型:选择题

一些居住建筑开发项目,可根据建设的( )对项目的结构进行逐层分解,如第一期工程、第二期工程和第三期工程等。

A.时间

B.进度

C.生产+系统

D.生产+项目

题型:选择题

A公司中标某市城区高架路工程第二标段。本工程包括高架桥梁、地面辅道及其他附属工程:工程采用工程量清单计价,并在清单中列出了措施项目;双方签订了建设工程施工合同,其中约定工程款支付方式为按月计量支付,并约定发生争议时向工程所在地仲裁委员会申请仲裁。
对清单中某措施项目,A公司报价100万元。施工中,由于该措施项目实际发生费用为180万元,A公司拟向业主提出索赔。
业主推荐B公司分包钻孔灌注桩工程,A公司审查了B公司的资质后,与B公司签订了工程分包合同。在施工过程中,由于B公司操作人员违章作业,损坏通讯光缆,造成大范围通讯中断,A公司为此支付了50万元补偿款。
A公司为了应对地方材料可能涨价的风险,中标后即与某石料厂签订了价值400万元的道路基层碎石料的采购合同,约定了交货日期及违约责任(规定违约金为合同价款的5%)并交付了50万元定金。到了交货期,对方以价格上涨为由提出中止合同,A公司认为对方违约,计划提出索赔。
施工过程中,经业主同意,为保护既有地下管线,增加了部分工作内容,而原清单中没有相同项目。
工程竣工,保修期满后,业主无故拖欠A公司工程款,经多次催要无果。A公司计划对业主提起诉讼。
问 题:

本工程是什么方式的计价合同它有什么特点

题型:选择题

阅读理解

     We know the famous ones-the Thomas Edisons and the Alexander Graham Bells-but what about the

less famous inventors? What about the people who invented the traffic light and the windshield wiper(雨

刮器)?Shouldn't we know who they are?

     Joan McLean thinks so. In fact,  McLean,  a professor of physics at Mountain University in Range, 

 feels so strongly about this matter that she's developed a course on the topic. In addition to learning

"who" invented "what",  however,  McLean also likes her students to learn the answers to the "why"and

"how"questions. According to McLean, "When students learn the answers to these questions,  they are

better prepared to recognize opportunities for inventing and more motivated to give inventing a try."

      Her students agree. One young man with a patent for an unbreakable umbrella is walking proof of

McLean's statement."If I had not heard the story of the windshield wiper's invention, "said Tommy Lee,

  a senior physics major, "I never would have dreamed of turning my bad experience during a rainstorm

into something so constructive." Lee is currently negotiating to sell his patent to an umbrella producer.

     So,  just what is the story behind the windshield wiper? Well,  Mary Anderson came up with the idea

in 1902 after a visit to New York City. The day was cold and stormy, but Anderson still wanted to see

the sights,  so she jumped aboard a streetcar. Noticing that the driver was struggling to see through the

snow covering the windshield,  she found herself wondering why there couldn't be a builtin device for

cleaning the window. Still wondering about this when she returned home to Birmingham, Alabama.

Anderson started drafting out solutions. One of her ideas,  a lever(操作杆) on the inside of a vehicle

that would control an arm on the outside,  became the first windshield wiper.

      Today we benefit from countless inventions and innovations. It's hard to imagine driving without

Garrett A. Morgan's traffic light. It's equally impossible to picture a world without Katherine J. Blodgett's

innovation that makes glass invisible. Can you picture life without clear windows and eyeglasses?

1. By mentioning "traffic light" and "windshield wiper",  the author indicates that countless

     inventions are________.

A. beneficial,  because their inventors are famous

B. beneficial,  though their inventors are less famous

C. not useful,  because their inventors are less famous

D. not useful,  though their inventors are famous

2. Professor Joan McLean's course aims to________.

A. add colour and variety to students' campus life

B. inform students of the windshield wiper's invention

C. carry out the requirements by Mountain University

D. prepare students to try their own inventions

3. Tommy Lee's invention of the unbreakable umbrella was________.

A. not eventually accepted by the umbrella producer

B. inspired by the story behind the windshield wiper

C. due to his dream of being caught in a rainstorm

D. not related to Professor Joan McLean's lectures

4. Which of the following can best serve as the title of this passage?

A. How to Help Students to Sell Their Inventions to Producers?

B. How to Design a Builtin Device for Cleaning the Window?

C. Shouldn't We Know Who Invented the Windshield Wiper?

D. Shouldn't We Develop Invention Courses in Universities?

题型:选择题

在荣格看来,艺术家应该是一种“更高意义上的人”,即()

A.拥有自由意志的人

B.自我实现的人

C.审美的人

D.集体的人

题型:选择题

乙型肝炎病毒携带者

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