粉碎机应符合的基本要求

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问题:

粉碎机应符合的基本要求

考点:生物工程设备生物工程设备题库
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按照《国务院关于加强国民经济和社会发展规划编制工作的若干意见》,我国建立三级三类规划管理体系,国民经济和社会发展规划按行政层次分为( )。

A.国家级规划、省级规划、市县级规划

B.总体规划、专项规划、区域规划

C.总体规划、行业规划、企业规划

D.总体规划、区域规划、地方规划

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对替牙期严重牙列拥挤的矫治,可考虑采用()

A.倾斜移动

B.转矩

C.差动力原理

D.缺隙保持器

E.序列拔牙法

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下颌切牙与上颌切牙的区别,错误的是()

A.下颌切牙牙冠窄小

B.下颌切牙牙根窄而扁

C.下颌切牙唇面光滑

D.下颌切牙舌面无明显边缘嵴

E.下颌切牙舌面有明显轴嵴

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Many businesses today use conferences as a means of discussing new plans for company. As people are paying more attention to the environment and green problems, more businesses are looking for ways to reduce their negative effect on the environment. Many businesses do this by using web conferencing.

Web conferencing is a technology that allows people to communicate more effectively over the Internet. It is an easy way of hosting and attending conferences without having to leave the office. Each of the people involved in a web conference will be posted an invitation to the conference with the time and date of the web conference on it. When the conference is ready to begin, all participants (参与者) must sit at their computer and they will be connected over the Internet.

Obviously, in doing this no fuel is used in traveling to and from a conference, and less work time is taken up in attending a conference.

Any material to be used during the web conference is simply e-mailed to all the participants before the conference. This not only saves paper but also greatly reduces mailing cost for the business.

As a conference hall or business center isn’t being used, it means that the only power that is used is the power used by the participants’ personal computers. Similarly conference organizers don’t have to arrange for food or overnight accommodation (住宿) for participants. All this means that less energy is used.

Many companies actively do many things to reduce their negative impact (影响) on the environment. So web conferencing is much cheaper and greener and more people are willing to host and attend a web conference.

小题1:What is the passage mainly about?

A.Ways of protecting the environment.

B.Green benefits of web conference.

C.Ways of hosting a web conference.

D.Impacts of web conferencing on costs.小题2:According to paragraph 1, many companies use web conferencing because they________.

A.are interested in using any new technology

B.believe that web conferencing is more convenient

C.want to do something to protect the environment

D.haven’t enough money to hold a traditional conference小题3:Web conferencing has all of the following advantages EXCEPT _________.

A.saving time

B.promoting understanding

C.saving energy

D.saving paper小题4:The participants of a web conference_________.

A.will be e-mailed an invitation before the conference

B.are required to sit in the office together

C.will receive many paper materials

D.must have access to the Internet

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