耐雪制动是为了防止由于闸片和制动盘面之间的积雪而引起制动力降低。
CRH2型动车组转向架可以分为动车转向架和拖车转向架。
In order to improve the efficiency of the communication with shore personnel, you should（） ["inform the chief engineer whenever there are problems","reduce the time wasted on checking items","know who is responsible for the domestic cleaning equipment","know the chain of authority on the shi"]
When accepting engine room spares, you should（） ["send a requisition list to the supplier","check that whether the items ordered have been already delivered","make the chief engineer on sport","follow a preset procedure"]
为了从客室侧出入驾驶室，设置了向客室侧方向打开的隔门。
质量教育的作用是什么？
