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【判断题】
恢复系数e=1 时，为完全弹性碰撞，机械能守恒。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】What format is adopted in the first paragraph?
A.
Block format
B.
Feature-by-feature format
【单选题】What format is used in the second paragraph?
A.
Block format
B.
Feature-by-feature format
【单选题】There are several debate formats. What format is our focus on ?
A.
AP debate format
B.
BP debate format
C.
AA debate format
D.
WP debate format
【简答题】通常,绝对湿度的水平分布与纬度有关,其中绝对湿度最大的地区出现在:( )地区
【简答题】阅读理解 You have heard of Webster Toys. Webster have made good, safe, interesting toys for more than a hundred years. Now, we sell them, and children play with them, in countries from New Zealand to Norw...
【简答题】已知复数z=（m 2 -2m-3）+（m 2 -3m-4）i，求实数m的值使z为纯虚数．
【单选题】下面有关十二指肠溃疡病的描述错误的是
A.
疼痛部位在上腹正中或稍右
B.
有夜间痛醒史
C.
进餐后疼痛可缓解
D.
疼痛发生与进食后30~60分钟
E.
疼痛规律是疼痛→进食→缓解
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