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题目类型: 单选题

题目内容

题目选项

A. Y2=Acos[2πt-π/2]
B. Y2=Acos[2πt-π]
C. Y2=Acos[2πt+π/2]
D. Y2=2Acos[2πt-0.1π]

正确答案

D

题目解析

题目纠错