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【判断题】
力偶是物体间相互的机械作用,这种作用的效果是使物体的运动状态发生改变。力偶没合力,不能用一个等效代换,也不能用一个与之平衡。A.
正确
B.
错误
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【简答题】听下面一段对话，回答第1-2题。 1. Why does the man want to buy the purple sweater online? A. It’s really cheap. B. It’s beautiful. C. It’s a very new style. 2. What is the relationship between the two speakers? A. ...
【简答题】电弧中的作用力主要包括____、____和____等。
【单选题】Why does the author say “Norman Vincent Peale deserved nothing less”?
A.
Because Norman died at the age of 95.
B.
Because Norman was the author of an all-time best-seller.
C.
Because Norman’s work has greatly influenced many people.
D.
Because Norman was one of his best friends.
【简答题】Why does the author say “Norman
Vincent Peale deserved nothing less”?A. Because Norman died at the age of 95. B. Because Norman was the author of an all-time best-seller. C. Because Norman’s work has ...
【单选题】Now Mary ____to feel a little tired after climbing. [ ]
A.
seem
B.
seems
C.
seemed
D.
seeming
【简答题】电弧中的作用力主要包括电磁收缩力 、____和____等。
【简答题】电弧中的作用力主要包括电磁收缩力、（）、（）等
【简答题】The company may feel a little late when swarming into the market.
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