我们自１９９５年４月至１９９７年１０月调查内蒙古地区蒙汉族汽车司机３０４８名，发现司机听力下降情况严重，尤其以驾驶大型汽车、长途运输汽车者明显，偏远牧区的司机听力下降尤甚。被调查的３０４８名司机中，全部为男性，年龄２３～５９岁，其中３０～４０岁２９５... We investigated 3048 Mongolian and Han nationality car drivers in Inner Mongolia from April 1995 to October 1997 and found that drivers’ hearing loss was serious. In particular, drivers who drive large cars and long distance transport vehicles obviously have a notable hearing loss in drivers in remote pastoral areas. 3048 drivers were investigated, all male, aged 23 to 59 years old, of which 30 to 40 years old 295 ...