What are the types of safety accidents for amusement equipment?

There are a lot of professional gymnastic trampoline, amusement equipment, a lot of security incidents, then the main amusement equipment safety accidents which? A, high-altitude fall accident: refers to the height of the base 2m above (including 2m) fall, caused by casualties, property damage. B, impact (fall) accident: refers to the people hit a fixed object, moving objects hit people, collision, falling objects impact, flying objects and so on. C, overturned accident: refers to the kids free zone trampoline park collapsed, resulting in casualties and property damage. D, electric shock accident: refers to the human body as a direct contact with the power, a certain amount of current through the human body, causing casualties. E, contact (high temperature moving parts) Accident: refers to the human body exposed to high temperature moving parts, causing casualties. F, fire accident: refers to the time and space to lose control of the burning caused by casualties, property damage.