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气象学家曾就空调设备对人体的影响进行了广泛的调查，取得了一些重要数据。长期在装有空调设备的楼房中工作的人，70％以上在开始工作2－3小时后，便出现疲劳感；60％的人说，他们很容易感冒；50％以上的人，则出现血液循环障碍症状和头痛。专家们认为：造成人们以上不适的原?
Meteorologists have conducted an extensive investigation of the effects of air conditioning equipment on the human body and have made some important data. Over 70% of people who work in buildings with air-conditioners for a long time are tired after 2-3 hours of starting work; 60% say they are very cold; more than 50% of them have blood Circulatory problems and headaches. Experts think: what causes the above discomfort?