一个热胀冷缩的物体正在绕固定光滑轴自由转动，则( )

lk2025-03-14 4

题目：一个热胀冷缩的物体正在绕固定光滑轴自由转动，则( )

A. 它受热膨胀或遇冷收缩时，角速度不变。

B. 它受热时角速度变大，遇冷时角速度变小。

C. 它受热或遇冷时，角速度均变大。

D. 它受热时角速度变小，遇冷时角速度变大。

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