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【判断题】
在重力作用下平衡的液体中,各点的单位势能相等。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Which one is the abbreviation and full name of “新冠病毒”?
A.
COVID-19, coronavirus disease 2019
B.
MERS, middle east respiratory syndrome
C.
SARS, severe acute respiratory syndrome
D.
H1N1
【简答题】[2018填空题]3. 完整的计算机系统应该包括()。
【单选题】Passage Four Every culture and every country in the world celebrates New Year, but not everyone does it the same way. The countries in North America and Europe welcome New Year on January the first. T...
A.
to keep the evil spirits away
B.
to have fun
C.
to celebrate the coming of the new year
D.
to keep to a custom
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