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【判断题】
自由是五四新文化运动的灵魂和核心。()A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】CAE
【单选题】Object 1 has twice the mass of Object 2. Each of the objects has the same magnitude of momentum. Which of the following statements is true?
A.
Both objects can have the same kinetic energy.
B.
One object has 0.707 times the kinetic energy of the other.
C.
One object has twice the kinetic energy of the other.
D.
One object has 4 times the kinetic energy of the other.
E.
None of the others.