题目内容
打呼噜时,呼吸道里气流的流动属于()
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若粘性流体在开放的粗细均匀的管道中维持稳定流动,则必须有()差才能维持稳定流动。
从能量的角度看,伯努利方程说明理想流体在流管中作稳定流动时,单位体积的动能、势能以及该点的()之和为一常量。
当流体在流管中流动时,雷诺数Re小于1000,流动状态为();若雷诺数Re大于1500,则流动状态为()。
I was admitted into a freshman 1.________ at Yale that required us to read up Western classics, comprehend them, 2.________ them and 3.________ papers with 4.________ ideas on them. Although this was my first year in an all-English environment, and sometimes I 5.________ all the hard work, I 6.________ understand Western society. I 7.________ my lack of preparation with diligence. I pulled all-nighters, I 8.________ after class to ask questions, I learned note-taking in English from my classmates, and I visited the writing tutor. As a result, as the year came to an end, I received 9._________ for all my papers.
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