单项选择题
A.60% 50% 40% B.50% 40% 30% C.40% 30% 20% D.30% 20% 10%
A.特大伤亡事故 B.重伤事故 C.重大伤亡事故 D.轻伤事故
A.92.23 B.93.33 C.93.35 D.92.35