however, the peak amplitude of thekth frequency component, kf, is only 1/k, so most of the（ ）in this waveform is in thefirst few frequency components. （2010年上半年网络工程师上午真题解析）
however, the peak amplitude of thekth frequency component, kf, is only 1/k, so most of the（ ）in this waveform is in thefirst few frequency components. （2010年上半年网络工程师上午真题解析）
A、frequency
B、energy
C、amplitude
D、phase
参考答案：B
参考解析：正在整理中,欢迎在文下评论区提供答案解析,谢谢！