cmhc的介绍里有这么一段: CMHC is Canada’s premier provider of mortgage loan insurance, mortgage-backed securities, housing policy and programs, and housing research.& j$ }1 s1 t' A; b0 [7 ]* K3 D
* }+ ?( a' }. L+ w' nmortgage-backed securities不就是“两房”做的房地产为抵押品的债券吗。* t- t. U6 u. G: M$ T