【单选题】If the price of a pair of Nike sneakers costs $85 in U.S, and the price of the same sneakers is €80 in Paris, the spot rate is $1.35 per euro, the euro __________.
A.
is correctly valued according to PPP
B.
is correctly valued according to relative PPP
C.
is undervalued according to PPP
D.
is overvalued according to PPP
【判断题】自然联接运算的计算过程是:首先计算笛卡尔积;然后在笛卡尔积的结果上,基于两个参数的关系模式中都出现的属性,即两个关系模式的所有同名属性进行属性值相等的选择运算;最后去除重复列。
【单选题】conscious of / unaware
【单选题】把信息有选择地告诉自己的朋友或有关的人的藤式沟通模式是()。
【判断题】用作排水固结地基的砂垫层含泥量不得大于5%。( )
【简答题】be conscious of _____(erous) be conscious of _____(hungry)