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日本国立公众卫生院和环境厅就气温对人的健康影响进行了卓有成效的研究。研究发现,当白天最高气温超过33℃时,对65岁以上老年人的健康威胁会增加。当气温低于8℃时,死亡率最高,在每百万人中,平均为23人;当气温在8℃～33℃时,死亡人数最少,平均19人;而超过33℃时,则死亡人数又?
Japan’s National Public Health Hospital and the Office of the Environment on the human health effects of temperature conducted a fruitful study. The study found that when the maximum daytime temperature exceeds 33 ° C, the health risk to the elderly over 65 years will increase. When the temperature is lower than 8 ℃, the mortality rate is the highest, with an average of 23 people per million; when the temperature is between 8 ℃ and 33 ℃, the death rate is the lowest, with an average of 19 people; while when it exceeds 33 ℃, the death rate is even lower Number again?