忽必烈创设的宣政院除了负责管理全国的宗教事务还负责监管下列哪个地区？[ ]
A、西域
B、西藏
C、台湾
D、蒙古
答案：B
连词成句。
1. Jim that I lost the key found yesterday
2. I who is know the man a model worker
3. The I received yesterday letter that was from my parents
4. This who saved is the doctor the boy's life
定子绕组的串电阻的降压启动是指电动机启动时，把电阻串接在定子绕组与电源之间，通过电阻的（）作用来降低定子绕组的启动电压。
A.分流
B.压降
C.分压
D.分流、分压
