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能够限制物体转动的约束为 ,只能限制物体沿垂直于支撑面方向移动的支座为
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举一反三
【单选题】听力原文: Now, it's 10 o'clock and time for a summary of the news. Schools where children are failing in reading and writing tests will be publicly identified under new government plans. The government al...
A.
To inform. parents and schools.
B.
To pick out good students.
C.
To expose poor schools.
【多选题】2017 年 4 月 1 日,中央、国务院发布通知,决定设立河北雄安新区。这是以同志为核心的党中央作出的一项重大的历史性战略选择,是千年大计、国家大事。雄安新区的设立有利于
A.
集中疏解北京的非首都功能
B.
调整优化京津冀城市布局和空间结构
C.
探索沿海和内地对外开放新模式
D.
探索人口经济密集地区优化开发新模式
【简答题】Listen to English news on the Internet once a day. Write the summary of the news after listening.
【简答题】Listen to the news item again and answer the following questions. Then give a brief summary of the news item. What is the goal of the G20 meeting? What has the IMF done to its forecast for global econ...
【判断题】根据本课程对地方政府的界定,省级政府不属于地方政府。
A.
正确
B.
错误
【单选题】Task Two--Summary of the news ?For questions 18-22, match the extracts with the summaries of the business news, listed A-H. ?For each extract, choose the summary reported. ?Write one letter (A-H) next...
A.
China and Russia are going to build hi-tech parks.
B.
The U.S, and China issued a joint statement on economic and financial issues.
C.
The Pan-Pearl River Delta region is willing to strengthen cooperation with the U. S. tourism players.
D.
Shanghai gets western gas that pumps through the huge West-to-East Natural Gas Pipeline.
E.
Shanghai Volkswagen Corporation plans to out the price of its car parts aiming to have more market share in China.
F.
China plans to build a third scientific research station on Antarctica during the 11th five-year-plan period.
G.
China plans to regulate fireworks industry.
H.
China strives to build the 'remanufacturing' industry as one of its pillar manufacturing industries.
【单选题】编译程序中语法分析器接收以( )为单位的输入。
A.
单词
B.
表达式
C.
产生式
D.
句子
【简答题】一套完整的防雷设备一般由接闪器、_________、引下线和接地装置等组成。
【简答题】一套完整的防雷设备一般由( )、( )和( )等组成。
【简答题】一套完整的防雷设备一般由( )、( )、( )和( )等组成。
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