论文部分内容阅读
随着国内经济的发展,道路条件越来越好,卡车驾驶员们已经习惯了在高速公路或宽敞的普通道路上驰骋,而山区公路依然是坡陡、弯急、路
With the development of the domestic economy, the road conditions are getting better and better. Truck drivers are accustomed to riding on the freeway or the spacious common roads. However, mountainous roads are still steep,