“安全”系指没有危险性。由于人们主观上对安全认识不同,判别“安全”或“不安全”有很多不同的概念。对安全程度,即危险性或风险,也有不同的态度。因人的判断而异,与人的技术、管理水平以及兴趣等密切相关。①自己愿意干的事,风险虽然大些也觉得没什么,例如拳击运动和美国的足球运动,选手的死亡率达二百分之一,但仍然有人干。②对于自己觉得危险但又避免不了的事,总是有恐怖感。③风险虽然相同,但对于频率小、发生一次死亡数目多的事故,与频率大、发生一次仅有很少死伤的事故相比,时前者较为重视。④对于死 “Safety ” means no danger. Because of the different subjective perceptions of safety, there are many different concepts that distinguish “safety” or “unsafe.” There is also a different attitude toward safety, ie risk or risk. Depending on the person’s judgment, it is closely related to people’s technology, management level and interest. ① The things that you are willing to do, the risks are bigger though you find nothing, such as boxing and the United States football, the player’s death rate of one hundred-two percent, but still some people do. ② For those who feel dangerous but can not avoid things, there is always a sense of terror. ③ Although the risks are the same, the former has paid more attention to accidents with smaller frequency and more deaths than those with high frequency and with few deaths and injuries. ④ for death