【简答题】切削速度确定后,用公式 计算主轴转速n(r/min)。
【单选题】A monopolist sells in two markets. The demand curve for her product is given by p1 =119-2x1 in the first market and p2 = 123-5x2 in the second market, where xi is the quantity sold in Market i and pi ...
【单选题】A monopolist has a constant marginal cost of $2 per unit and no xed costs. He faces separate markets in the U.S. and England. He can set one price p1 for the American market and another price p2 for t...
A.
be larger than the price in England by 1.
B.
be smaller than the price in England by 1.
C.
equal the price in England.
D.
be larger than the price in England by 3.
【多选题】20世纪中国人民在前进道路上经历的第二次历史性巨大变化是( )。