根据国际生产折中理论，跨国公司进行对外投资的充分条件是（）
A.区位特定优势
B.市场内部化
C.资源禀赋优势
D.所有权特定优势
参考答案：A
These people ____ in the city but now they ____ in the country and like it very much.
A．were used to live ; used to live
B．used to live ; are used to living
C．used to living ; used to live
D．were used to living ; are used to live
目前利用卫星进行传输，采用频分多址的联接方式是（）。
A.FDMA
B.TDMA
C.SDMA
D.CDMA
