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1对象与方法1．1调查对象随机抽查某作训部队98人，其中导弹专业人员50人；非导弹专业人员48人；年龄18～35岁。进入阵地前体检健康。1．2调查方法（1）症状学调查；采用疲劳症状分类方法[1]，将疲劳症状分为A、B、C三类：A类为一般症状，B类为精神症状，C类为神经感觉症状，于
1 objects and methods 1.1 survey random selection of a training unit 98 people, including 50 missile professionals; 48 non-missile professionals; aged 18 to 35 years. Health examination before entering the position. 1.2 Methods of investigation (1) Symptom investigation; Fatigue symptoms classification method [1], the fatigue symptoms are divided into A, B, C three categories: A class of general symptoms, B class of mental symptoms, C class of nerve Feeling symptoms, at