【判断题】理论塔反数可以用来衡量色谱柱的柱效。( )
【单选题】Suppose a country is producing $20 million of real GDP. If the economy grows at 10 percent per year, approximately how many years will to take for real GDP to grow to $80 million?
【单选题】Suppose a country is much richer than the others in the Solow growth model. What happens in the long run?
A.
The other countries catch up to the rich one.
B.
The rich country grows the fastest.
C.
The rich country becomes poorer than the others.
【单选题】(第三章) 满族在我国的分布以( )最多。