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【简答题】Speaking of Copenhagen, what do you think of? The little Mermaid, the fairy tale writer H.C. Anderson, the COP15 meetings , or a city where people bike even though they have cars. When landing on Cope...
【判断题】刚体是指在任何外力的作用下,大小和形状始终保持不变的物体。
A.
正确
B.
错误
【单选题】在力的作用下大小和形状始终保持不变的物体叫( )。
A.
固体
B.
刚体
C.
弹性体
D.
弹塑性体
【单选题】在力的作用下,形状和大小都始终保持不变的物体为( )。
A.
刚体
B.
小变形体
C.
固体
D.
不变体
【简答题】阅读并修改text2 7.2.docx Text 2 “What is science?” Once upon a time there was curiosity. That was the time when the fairy tale of science started. I call it fairy tale because science is a never-ending s...
【单选题】In the fairy tale of dog, where did villagers manage to find some rice seeds?
A.
In the dog’s tail.
B.
On the dog’s head.
C.
In the dog’s mouth.
D.
In the dog’s leg.
【简答题】在任何外力的作用下,大小和形状始终保持不变的物体称为A. 刚体
【单选题】在任何外力作用下,大小和形状始终保持不变的物体称为()。
A.
固体
B.
刚体
C.
弹性体
D.
弹塑性体
【判断题】刚体是一个理想化的力学模型,指在力的作用下它的形状和大小始终保持不变。
A.
正确
B.
错误
【简答题】The amount of difficult vocabulary in the fairy tale was ________________; young children were able to understand most of the words.
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