均质平面正多边形,对平面内过其形心的任一轴的转动惯量均相等。( )
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如果质点系的质心速度为零,则质点系对任一固定点的动量矩都一样。( )
A. 对
B. 错
Big data refers only to structured data.
A. 对
B. 错
Big data can serve as the basis for innovation.
A. 对
B. 错
The ever-increasing volume, variety and velocity of information form big data.
A. 对
B. 错
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