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8
A Brief Overview of Globalization.pdf
Econ, Globalization
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22
A brief history of Mathematics.ppt
A brief history of Mathematics
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8
Design Brief - Tech Etch.pdf
Design Brief - Tech Etch
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6
EOC Brief Introduction_201711.pptx
EOC Brief Introduction_201711EOC Brief Introduction_201711EOC Brief Introduction_201711
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57
SMB Retail Banking Industry Brief.pdf
您的浏览器可能无法阅读 PDF 文档。Google 建议您查看本文档的 纯文本版本。
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41
1 brief introduciton to psycholinguistics.ppt
1 brief introduciton to psycholinguistics
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4
A Brief History of Comics.doc
SequentialArt. summarybased ScottMcCloud’s Understanding Comics mymemory from other assorted reading
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14
A Brief Review of CDA.ppt
话语分析
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17
A Brief History of Thermodynamics.ppt
A Brief History of ThermodynamicsA Brief History of ThermodynamicsA Brief History of Thermodynamics
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12
A Brief Summary of AUV.pdf
The concept of a submersible vehicle is not a new idea. The first American submarine
was called “Turtle.” It was built at Saybrook, Connecticut in 1775 by David Bushnell and his
brother, Ezra. The Turtle was a little egg-shaped wooden submarine held together by iron straps.
Turtle bobbed like a cork in rough surface winds and seas even though she was lead weighted at
the bottom. In this hand and foot-operated contraption, one person could descend by operating a
valve to admit water into the ballast tank and ascend with the use of pumps to eject the water.
Two flap-type air vents at the top opened when the hatch was clear of water and closed when it
was as not. The air supply lasted only 30 minutes. The Turtle´s first engagement, which took
place in New York Harbor in 1776, was also the first naval battle in history involving a
submarine.
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