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速度与机械运动

> 根据你的生活经验判断，下列数据中最接近生活实际的是 A.两层楼房的高度约为20m B.对人体的安全电压不超过220V C.中学生骑自行车的正常速度约为4m/s D.一张课桌重约500N

问题：

发布时间：2024-09-11

根据你的生活经验判断，下列数据中最接近生活实际的是

A.两层楼房的高度约为20m
B.对人体的安全电压不超过220V
C.中学生骑自行车的正常速度约为4m/s
D.一张课桌重约500N

参考答案：

提问用户：Gh***kMm

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