Appurtenant work, which supples a system of function as management, charge, monitoring, maintaining, rescue and service, is a major component part of expressway.
附属区工程是高速公路重要的组成部分，是为了高速公路的正常通行提供管理、收费、监控、养护、拯救、服务等一系列功能。
Appurtenant work, which supplies a system of function as management, charge, monitoring, maintaining, rescue and service, is a major component part of expressway.
附属区工程是高速公路重要的组成部分，是为了高速公路的正常通行提供管理、收费、监控、养护、拯救、服务等一系列功能。
The trainees are able to use fall protection system, service lift and rescue devices after being trained;
对培训对象授予培训后，能够使用防坠落系统攀爬直梯和使用救援缓降设备；
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