方法运用职业寿命表的方法研究其寿命水平，对哈尔滨、齐齐哈尔铁路分局客运段的男、女性乘务员（共39553人年）进行了调查，以同期、同地居民为对照。
Methods By means of using the method of occupational life expectancy to analyze the level of life , with the local inhabitants of the same time as the control group , the staff in railway branch are investigated .
齐齐哈尔客运段