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2017-18 秋 Week 3 Assignment 3.mp4 2017-18 秋 Week 3 Assignment 3.mp3: We told you last night, Facebook will now give Congress access to political ads it ran that turned out to be funded by groups associated with Russia. All this comes as Facebook CEO is doing the kinds of things that make people wonder 1____________(11)____________. 2____________(7)____________. We're going to bring Facebook to an even higher standard of transparency. Facebook 3____________(9)____________ after admitting that accounts with ties to Russia purchased more than $100,000 in ads during the 2016 presidential campaign. In a video message, billionaire CEO Mark Zuckerberg says the social media giant will now turn over more than 3000 4____________(7)____________ investigating possible influence. We'll continue our own investigation into 5____________(7)____________. We are looking into foreign actors, including additional Russian groups and other former Soviet states, as well as organizations like the campaigns, to further our own understanding of how they used of our tools. Facebook says the ads only show which Facebook page paid for it, not necessarily the people behind it. A detail, the company says it's now in the process of changing. 6____________(4)____________ questioned the cooperation, some lawmakers appeared to be happy but say there's still a long way to go. I'm interested in what all the social media platforms, uh, know about, uh, activities on their platforms by... specifically funded by Russians and I believe that that's something that's worthy of an open hearing. President Trump 7____________(4)____________ between Russia, Facebook and his election, tweeting, quote, "the Russia hoax continues, now it's ads on Facebook. What about the totally biased and dishonest media coverage in favor of crooked Hillary?" This all comes a year after 8____________(4)____________ that its trending topics favored liberal causes. 9____________(5)____________ Zuckerberg may run for president in 2020, he's hired former Obama campaign chairman David Plouffe and Bush chairman Ken Mehlman. The Russian government today denied any involvement in the Facebook ads. 10____________(9)____________ the Senate Intelligence Committee next Wednesday. Bret? Adam, thank you.
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【判断题】液压马达是把液体的压力能转换为机械能的装置
A.
正确
B.
错误
【单选题】液压马达把压力能转换为( )。
A.
热能
B.
动能
C.
势能
D.
机械能
【单选题】液压马达是把液体压力能转换为( )的元件。
A.
机械能
B.
压力能
C.
电能
D.
动能
【单选题】液压马达是把液体压力能转换为( )的元件。
A.
机械能
B.
压力能
C.
电能
【判断题】液压执行元件(液压缸或液压马达)把液体压力能转换为机械能,从而驱动工作机构,实现直线往复运动和回转运动。? ()
A.
正确
B.
错误
【判断题】液压马达是把液体的压力能转换为机械能的装置,从原理上讲,液压泵可以作液压马达用,液压马达也可作液压泵用。
A.
正确
B.
错误
【单选题】液压马达也叫油马达,是把液体的( )的装置。
A.
压力能转换为机械能
B.
机械能转换为压力能
C.
势能能转换为机械能
D.
机械能转换为势能
【判断题】液压马达是把液体的压力能转换为机械能的装置
A.
正确
B.
错误
【单选题】滴定度反映的关系是( )
A.
滴定液的体积和物质的量
B.
滴定液的体积和被测组分质量
C.
滴定液浓度和被测组分质量
D.
滴定液的体积和供试品质量
【多选题】能正确反映对应变化关系的图像是
A.
向一定量的稀硫酸中滴加氢氧化钠溶液至过量
B.
一定温度下,向不饱和硝酸钾溶液中不断加入硝酸钾固体,充分搅拌
C.
将等质量的铁、锌两块金属分别与溶质质量分数相同且足量的稀硫酸反应
D.
向FeCl 3 和HCl的混合溶液中滴加足量的NaOH溶液
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