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【判断题】
质点系中各质点之间的相互作用的内力,不可能改变改质点系内任一质点的动量。A.
正确
B.
错误
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举一反三
【单选题】When children started a fight they ______.
A.
decided not to speak to each other
B.
gave each other a chance to forget their anger
C.
would never talk to each other
D.
were separated from each other
【单选题】Everything had a name, and each name ________ a new thought.
A.
gave birth to
B.
gave a reception to
C.
gave a turn to
D.
gave access to
【简答题】已知离散因果系统的方框图如下,求(1)系统的差分方程(2)系统函数H(z)(3)判断系统稳定性
【单选题】I wish I_________ longer this morning, but I had to get up and come to class.
A.
slept
B.
had slept
C.
might have slept
D.
have slept
【简答题】完形填空。 When I first entered university, my aunt, who is an English professor, gave me a new English dictionary. I was 1 to see that it was an English dictionary, also known as a monolingual dictionary....
【简答题】I had morning tea and a quick look at the newspapers while the computer was loading.
【简答题】“双手拇指与四指相捏，指尖相对，微动几下。”是以下哪个词的打法？
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