随着国民经济的快速发展和人民生活水平的提高,对汽车货运质量问题越来越重视.衡量货物运输质量的主要指标是及时、快速、方便、安全、经济.其中安全指的是货物不缺不损、不变质、不变形、不受污染(也不污染周围环境).为保证各种货物运输质量的要求,同时也为了提高运输效率,各种专用车辆越来越广泛地被采用.其中数量最多的是干式 With the rapid development of the national economy and the improvement of people’s living standard, the quality of the freight transportation is paid more and more attention to. The main indicators to measure the quality of freight transport are timely, rapid, convenient, safe and economical. No damage, no deterioration, no deformation, no pollution (nor pollute the surrounding environment) .In order to ensure the quality of various goods transport requirements, but also to improve transport efficiency, a variety of special vehicles more widely used. The largest number is dry