从外形怎样识别206与209型转向架？

材料A-E提供了五家旅行社的信息，请根据以下五人Nancy, Carlos, Edie, Tom, Alice各自的需求选择合适的旅行社。

A. Dalian International Tourist Agency

Our tourist agency has a five-day tour from Yantai to Qingdao. During this period, our best guides will take you to see the attraction of the sea and swim by the seashore.

B. Mount Tai Tourist Agency

Mount Tai is well-known for its great views at home and abroad. This time our trip will give you the chance to enjoy the typical attraction of the natural scenes of the mountain. During this time, you can see how the sun rises in the east and the endless sea of clouds at sunset.

C. New Land Tourist Agency

In this summer vacation, our agency plans to visit Wang’s Grand Courtyard in Shanxi Province. In this one-day tour, we will lead you to the attraction of the well-known courtyard as well as the typical food culture in this area.

D. Peking Tourist Agency

Our agency will have a special three-day trip in Beijing. In our trip you will see the grand Forbidden City, the Bird’s Nest, Hutong and the Great Wall.

E. Sichuan Youth tourist Agency

Our agency will organize a special trip to Jiuzhaigou. In the valley, we can enjoy the beautiful lakes, waterfalls and animals. During the period, you can put yourself in the natural environment.

F. Hangzhou Tourist Agency

Our agency plans to boat in the West Lake in this summer vacation. During this tour, you will see the beautiful scene of the West Lake. Also, you can have fun with your friends on the boat.

小题1:Nancy: I really want to visit a place where I can be far away from the city. I want to see wonderful waterfalls and quiet lakes there is no noise, no pollution and no troubles.

小题2:Carlos: Recently, I am interested in the courtyards and the special food culture in Shanxi Province. So I want to see the famous courtyards this summer vacation.

小题3:Edie: I really want to see the typical sports stadium in Beijing. Besides, I want to visit the For bidden City and Hutong, so I can know more about the culture there.

小题4:Tom: I like climbing very much, because I find it not only a kind of sport, but also a good way of getting closer to the nature. At the same time, I can enjoy the scene of sunrise and the sea of clouds.

小题5:Alice: I live in a place far from the sea, so I want to go somewhere by the sea.

关于校对工作与编辑工作关系的说法，正确的有（）。

A.在古代相当长的时期里，编校是合一的

B.校对工作是编辑工作的前提

C.在书刊生产过程中，编辑与校对的目标完全一致，都是为了将差错消灭在书刊印刷之前

D.校对工作是编辑工作的延续，是对编辑工作的补充和完善

E.校对工作和编辑工作两者相互依赖，相互配合

在低速高负荷条件下工作应选用粘度小的润滑油。

曹魏嘉平年间（公元249—254年），担任敦煌太守的（），在敦煌地区进行了许多农业改革活动，由于先进的耕作技术的推广，敦煌农业生产水平显著提高。

A.仓慈

B.皇甫隆

C.赵基

D.裴岑

以下对于ATM的说法，正确的有（）。

A.ATM是一种面向连接的技术

B.ATM的设计充分考虑了分组交换和电路交换的优点

C.ATM应用的一个现实基础是传输系统质量和容量的提高

D.由于IP业务可以利用ATM在广域网上传送，所以ATM是类似PPP、帧中继工作在第二层，没有OSI模型第二层，没有OSI模型第三、四层的功能