单项选择题
Marine Bills of Lading are used in international transp...
单项选择题Marine Bills of Lading are used in international transport by sea. ( )
The dirty bills of lading may mean that ( )A.D．B.
单项选择题The dirty bills of lading may mean that ( )
在组合投资中,即使增加证券数目,也不能消除系统性风险。( )A.正确B．错误
单项选择题在组合投资中,即使增加证券数目,也不能消除系统性风险。( )
