【简答题】( )Hola, buenos días
【单选题】In the Ricardo model,
A.
there is only one factor of production.
B.
international trade is negative-sum .
C.
differences in factor endowments give rise to international trade.
D.
there is only one industry in each country.
【单选题】干货原料的涨发方法除油发、盐发、火发、碱发等外,还应有()。
【单选题】¡Hola María!¡Hola Jorge!¡ a mi casa!
【单选题】啊发发发发发发发发发啊发发发发发 啊发发发发发 啊发发发啊发发发
【单选题】干料涨发的方法主要有:()、油发、盐发、火发、碱发等。
【简答题】¡Hola, Luis! _________________________________________