( )事故由生产经营单位组织成立事故调查组。
A.轻伤
B.重伤
C.死亡
D.A和B
参考答案:D
下列哪些选项是国际学术会议的开场语句?()
A.I am very pleased to have this opportunity to....
B.First let me express my gratitude
C.Now after a short introduction I would like to read to the main part of my paper...
D.The last part of my report will be devoted to....