A.331rad/s B.375rad/s C.500rad/s D.750rad/sA

恬恬2019-12-17  7

问题

选项 A.331rad/sB.375rad/sC.500rad/sD.750rad/s

答案A

解析[img]/upload/tiku/37/5346820_1.jpg[/img]
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