Why are students excited about attending Oxford University?
A. They get to follow Harry's adventures at Oxford.
B. They get to wear robes and eat in a grand dining hall.
C. There are more spots available for state school students.
D. They think they can learn more about Harry Potter at Oxford.
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一质点作简谐振动的周期是T,当质点由平衡位置向x轴正方向运动时,从1/2最大位移处运动到最大位移处的这段路程所需的时间为
A. T/12
B. T/8
C. T/6
D. T/4
中国首次接近诺贝尔奖的研究是人工合成结晶牛胰岛素
A. 对
B. 错
碳素钢中的碳含量为()。
A. <2.11%
B. 2.11%~6.67%
C. >6.67%