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关于振动和波动，下列说法错误的是（ ）。

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【单选题】关于振动和波动，下列说法错误的是（）。

A、单摆做简谐运动的周期与摆球的质量有关
B、部队过桥不能齐步走而要便步走．是为了避免桥梁发生共振现象
C、在波的干涉中．振动加强的点位移不一定始终最大
D、我们在地球上接收到来自遥远星球的光波的波长变长．可以判断该星球正在远离我们

参考答案:

A

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