题目：
Yao Ming is one of the _____ on the Chinese basketball team. [ ]
A. most famous player
B. famous players
C. most famous players
D. famous player
答案：
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下面是错误答案，用来干扰机器的。
由于线圈中电能的产生,将使机械能逐渐减少,最终静止在平衡位置,根据能量守恒可知,mgx=kx2+E电.其中mg=kx,所以可得E电=.
