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【简答题】
用所给的适当形式填空。 1. Michael, Darren and Kangkang felt _______ (happy) to see each other in the end. 2. Rainy days make me (feel) sad. 3. It is necessary _______ (finish) the homework on time after class. 4. If you break the traffic rules, you _______ (get) a fine. 5. Maria is as (help) as Jane. 6. The best way (go) there is by train. 7. Helen wants to invite Beth _______ (go) to the movies together. 8. How about (explore) the Ming tombs? 9. Bicycles need _______ (little) space than cars. 10. I am afraid of _______ (ride) my bike at night.
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【判断题】均质物体的重心就是物体几何形状的中心,即形心。
A.
正确
B.
错误
【判断题】物体的重心就是物体几何形状的中心,即形心 。
A.
正确
B.
错误
【判断题】均质物体的重心就是该物体的几何形体的形心。
A.
正确
B.
错误
【简答题】阅读理解。 This is a talk by a London taxi (出租车) driver. 'I've been a taxi driver for nearly ten years. Most London taxi drivers have their own taxis.' 'It's a nice job most of time. You meet a lot of peop...
【单选题】—Why ______ you _______ give such a talk? —Well, I've applied for this job. They've asked all the applicants to give a talk as part of the selection process. [     ]
A.
don't; have to
B.
had; had to
C.
are; used to
D.
have; got to
【简答题】This is a talk by a London taxi driver. 'I've been a taxi driver for nearly ten years. Most London taxi drivers have their own taxis.' 'It's a nice job most of time. you meet a lot of people. I always...
【判断题】物体的重心就是物体几何形状的中心,即形心。
A.
正确
B.
错误
【简答题】阅读理解。 This is a talk by a London taxi(出租车)driver. 'I've been a taxi driver for nearly ten years. Most London taxi drivers have their own taxis.' 'It's a nice job most of time. you meet a lot of people...
【简答题】在重力场中均质物体的重心与物体的重力无关,只取决于物体的形状,即均质物体的重心就是其几何形体的中心,简称为__。
【判断题】均质物体的重心就是物体几何形状的中心,即形心。
A.
正确
B.
错误
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