【单选题】Born in the trough of the Great Depression, Edmund Phelps, a professor at Columbia University who won the Nobel Prize for economics, has spent much of his intellectual life studying slumps of a differ...
A.
unemployment is a hot potato for economists to study.
B.
unemployment is the topic that interests Mr. Phelps the most.
C.
Mr. Phelps's parents asked him to study unemployment.
D.
Mr. Phelps's research is based on the existing research results.
【简答题】随着我国私人轿车拥有量的不断增加,汽车尾气排放量也不断增加,对环境造成的污染日益严重,国家陆续出台了一系列鼓励小排量汽车生产和使用的政策。某汽车制造公司通过市场调查发现,1.1升排量的小轿车在西北某城市特别受消费者青睐。该公司决定开发1.1升排量的新型A品牌家用轿车,并在产品性能不低于竞争对手的情况下,将价格定得低于所有竞争对手同类产品。A品牌轿车在该城市投放市场不久,便深受消费者欢迎,成为市场占...
【判断题】诱变剂主要对蛋白质分子的某个位点发生作用。
【单选题】公司以银行存款 30万元采购行政管理部门用汽车一台,针对该业务在记账凭证上编制的会计分录为:“借记管理费用,贷记银行存款”,并据以登记入账。针对该错账,应采用的错账更正方法是( )。
【单选题】A pattern that at the crest the motion of each particle is forward and at the trough it is backward relative to the wave's motion is ______.