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【简答题】
某大学二年级学生,校田径队队员,参加常规训练。在更衣室内室温为20°C,湿度30%,运动前测其口腔温度为36.7°C,身体无任何不适,当时室外温度为33°C,湿度60%。他来到室外后,皮肤有温热感并开始变红,运动时,他的躯干、四肢等部位开始出汗,运动结束后测量其口腔温度为38.5°C,无特殊不适。请根据生理学知识回答下列问题 (1)人体的散热方式主要有哪几种?根据散热原理,如何降低高热病人的体温? (2)为什么出现皮肤变红、出汗和体温上升?
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