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我认为这是一起道路交通事故。分析意见如下:一、从事故的直接原因形成来分析事故直接原因是川AA3503小货车牵引川Q7861大货车的牵引件（硬连接）弯曲断裂,使刹车总泵
I think this is a road accident. Analysis of the views are as follows: First, the formation of the accident from the direct cause of the accident is the direct cause of the accident is Sichuan AA3503 minivan traction Q7861 large truck traction (hard connection) bending fracture so that the brake master cylinder