一平面简谐波表达式为y=-0.05sinπ(t-2x)(SI),则该波的频率γ(Hz)、波速u(m/s)及波线上各点振动的振幅A(m)依次为:()
A:,-0.05
B:,1,-0.05
C:,0.05
D:2,2,0.05
出自:基础考试