伤亡事故类别是根据事故发生的起因物确定的,如因土壁坍塌,引起人员窒息伤害,其伤亡类别定为坍塌伤害。
查看答案
They have learned about()in recent years.
A. several hundreds English words
B. hundreds of English words
C. hundred of English words
D. several hundred English word
一级普通消防站消防车库的使用面积是()m2。
A. 540~720
B. 270~450
C. 810~1080
D. 810~1280