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判断题

数控机床是为了解决单件、小批量、精度高、形状复杂的零件加工的自动化要求而产生的。

  • 正确

  • 错误

判断题

数控机床的使用提高生产效率,经济效益明显,有利于生产管理的现代化。

  • 正确

  • 错误

判断题

数控机床正在不断采用最新技术成就,朝着高速化、高精度化、多功能化、智能化、系统化与高可靠性等方向发展。

  • 正确

  • 错误

判断题

数字伺服系统指的是伺服系统中的控制信息用数字量来处理。

判断题

机械动、静摩擦的非线性不会导致数控机床爬行。

判断题

电滚珠丝杆是伺服电动机与滚珠丝杆的集成,采用电滚珠丝杆可以大大简化数控机床的结构。

单选题

Can you tell me how ______ to the railway station, please?

  • getting

  • to get

  • got

完形填空

二、阅读理解

阅读下面的文章,根据文章内容判断文章后的句子是正确(T)还是错误(F)。(每题10分)

Beijing's Roads for the Future

  The road system in Beijing's central business district (CBD) is being re-designed to make public transportation easy and improve efficiency.

  Plans for 45 roads within the CBD have been approved, measuring 41.5 kilometers in total. In addition to public buses, free or low price shuttle buses from residence areas to subway stations will also be provided for commuters.

  This is just over four times the number of roads opened in 2007, and will add another 15.5 km to the existing road network.

  Besides roads, an underground traffic system has also been operating, which includes four new subway lines beneath the CBD.

  The underground connection system is made up of two levels. The first underground floor is set aside mainly for pedestrians and commercial facilities, while the second underground floor is planned for parking.

  The city has also invested 140 million yuan to set up a traffic inquiry system, through which the public can check traffic conditions online and see the most convenient routes on their GPS system. In the future, the CBD will be fully covered by an intelligent traffic control system.

 

操作提示:句子正确选择下拉选项框为“T”;句子错误选择下拉选项框为“F”。

The road system in Beijing's central business district (CBD) is being designed again. 1

2. Commuters can only take public buses from residence areas to subway stations. 2

3. The re-designed road will be 15.5 kilometers long. 3

4. The underground traffic system has four new subway lines beneath the CBD. 4

5. Both levels of the underground connection system are planned for parking. 5

__1__
  • T
  • F
__2__
  • T
  • F
__3__
  • T
  • F
__4__
  • T
  • F
__5__
  • T
  • F
单选题
__1__
  • T
  • F
单选题
__2__
  • T
  • F