【单选题】下列关于闭区间上连续函数的性质叙述错误的是
A.
闭区间上的连续函数一定可以取到最大值和最小值 .
B.
闭区间上的连续函数一定可以取到最大值与最小值之间所有的值
【单选题】患者,女性,55岁。因肺气肿入院,患者呼气费力,在护理此患者的过程中,以下做法不妥的是:
【单选题】One of the major differences between a monopolist and a purely competitive firm is that the monopolist has a _____ demand curve, while the purely competitive firm has a _____ demand curve.
A.
downward-sloping; perfectly elastic
B.
perfectly inelastic; perfectly elastic
C.
downward-sloping; perfectly inelastic
D.
perfectly elastic; downward-sloping
【单选题】建筑基线布设时,为了便于点位的相互校核,基线点的数目应不少于
【单选题】A monopolist has a constant marginal cost of $2 per unit and no fixed 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...
A.
be larger than the price in England by 4.
B.
be smaller than the price in England by 4.
C.
equal the price in England.
D.
be larger than the price in England by 6.
【判断题】闭区间上的连续函数不一定有最大值与最小值。
【判断题】闭区间上的连续函数一定有最大值与最小值。
【单选题】At his current level of output, a monopolist has a MR of $10, a MC of $6, and an economic profit of zero. If the market demand curve is downward sloping and his marginal cost curve is upward sloping, ...
A.
is producing at the profit-maximizing level of output.
B.
could increase profit by increasing output.
C.
could increase profit by increasing his price.
D.
should exit the market if significant fixed costs have been incurred.
【单选题】患者,女性,55岁。因肺气肿入院,患者呼气费力。在护理此患者的过程中,以下做法不妥的是
【单选题】Suppose we know that a monopolist is maximizing its profits. Which of the following must be true? The monopolist has:
A.
maximized its total revenue.
B.
set price equal to its average cost.
C.
maximized the difference between marginal revenue and marginal cost.
D.
equated marginal revenue and marginal cost.