企业所得税前扣除的管理费用和财务费用合计( )万元。 A．999.2 B．1000

[说明] 

某物流公司为了整合上游供应商与下游客户，缩短物流过程，降低产品库存，需要构建一个信息系统以方便管理其业务运作活动。 

[需求分析结果] 

（1）物流公司包含若干部门，部门信息包括部门号、部门名称、经理、电话和邮箱。一个部门可以有多名员工处理部门的日常事务，每名员工只能在一个部门工作。每个部门有一名经理，只需负责管理本部门的事务和人员。 

（2）员工信息包括员工号、姓名、职位、电话号码和工资；其中，职位包括：经理、业务员等。业务员根据托运申请负责安排承运货物事宜，例如：装货时间、到达时间等。一个业务员可以安排多个托运申请，但一个托运申请只由一个业务员处理。 

（3）客户信息包括客户号、单位名称、通信地址、所属省份、联系人、联系电话、银行账号，其中，客户号唯一标识客户信息的每一个元组。每当客户要进行货物托运时，先要提出货物托运申请。托运申请信息包括申请号、客户号、货物名称、数量、运费、出发地、目的地。其中，一个申请号对应唯一的一个托运申请；一个客户可以有多个货物托运申请，但一个托运申请对应唯一的一个客户号。 

[概念模型设计] 

根据需求阶段收集的信息，设计的实体联系图和关系模式（不完整）如图2-1所示。 

[关系模式设计] 

部门（部门号，部门名称，经理，电话，邮箱） 

员工（员工号，姓名，职位，电话号码，工资，） 

客户（）托运申请（） 

安排承运（）

根据实体联系图，将关系模式中的空（a）～（d）补充完整。分别指出部门、员工和安排承运关系模式的主键和外键。

Baddeley和Hitch提出的工作记忆系统包括( )

A．中枢执行系统

B．语音环

C．视空间模板

D．结构分析系统

柴油机混和气形成装置是（）。

A、喷油器

B、燃烧室

C、进气管

D、输油泵

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 think 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.”

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 built-in 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?

小题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小题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 invention小题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小题4:Which 0f 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 Built-in Device for Cleaning the Window?

C  Shouldn’t We Know Who Invented the Windshield Wiper?

D  Shouldn’t We Develop Invention Courses in Universities?  

如图5所示，此类电磁换向阀为（）。

A、三位四通阀

B、四位三通阀

C、二位四通阀

D、两位三通阀