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物理竞赛中有一类试题,没有给出具体数据或已知数据极少,它们大多来源于日常生活,这类问题虽不要求计算出精确数值,但需要根据生活经验进行合理估算.
There are one type of questions in the physics competition, no specific data are given or there are few known data. Most of them come from daily life. Although such questions do not require accurate numerical calculations, they need to be reasonably estimated based on life experience.