Is there any serious injury or casualtyaccident happened in the company during the last 3 years?
最近三年内，贵公司是否发生过重伤或死亡的重大工伤事故？
2
The way leading to occurrence of drop casualtyaccident from hanger is discovered and some preventive measures are put forward.
找出了导致吊架坠落伤亡事故发生的途径，并提出了一些预防措施。
3
The coal mine gas explosion accident is the most serious casualtyaccident of mine, and preventing the gas accident is the most important work in the coal production enterprise.