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单选题质点作简谐振动,振动方程为, 当时间t = T/2(T为周期)时,质点的速度为

A.

B.

C.

D.

大学物理（下）（天津大学）课程封面

学科：大学物理（下）（天津大学）

时间：2023-05-07 09:45:34

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