【单选题】( 单方程计量经济学模型理论与方法 中 ) 根据样本资料已估计得出人均消费支出 Y 对人均收入 X 的回归方程为 ,这表明人均收入每增加1%,人均消费支出将增加。 A 、 2% B 、 0.2% C 、 0.75% D 、 7.5%
【单选题】霍桑实验表明,导致工作效率提高的主要因素是()
【简答题】What patents may the members of WTO deny to grant?
【单选题】What are the arguments for the private ownership of genome patents?
A.
The ownership encourages innovation.
B.
The ownership has long been part of European Way.
C.
The ownership may mark the discovery of the DNA double helix.
【单选题】What are the arguments against the private ownership of genome patents?
A.
Doctors are not permitted to do gene tests without buying patents.
B.
The ownership may slow down the research progress.
C.
The codes for height and intelligence will be revealed.