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单项选择题
以下哪个不是春节的习俗？（）
A.饮屠苏酒
B．放爆竹
C．荡秋千
D．贴桃符
B．放爆竹
C．荡秋千
D．贴桃符
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问答题
The probability of occupancy of a state at an energy E is f(E): Fermi-Dirac function.
答案：
The Fermi-Dirac distribution function, denoted as f(E), desc...
