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【简答题】
Q2EventsYou are playing a solitaire game in which you are dealt three cards without replacement from a simplified deck of 10 cards (marked 1 through 10). You win if one of your cards is a 10 or if all of your cards are odd.How many winning hands are there if different orders are different hands?【图片】
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【单选题】除专门测量高压的仪表外,其他仪表均不得直接测量高压。测量用的连接电流回路的导线截面积要与被测回路的电流相适应;连接电压回路的导线截面积不得小于 ( ) mm2。
A.
1
B.
1.5
C.
2
D.
2.5
【单选题】An economic profit of zero implies:
A.
normal profit.
B.
the firm is covering both explicit and implicit costs.
C.
the firm's revenues are sufficient to compensate the money and time that the owners put into the business.
D.
all of the above
【单选题】When marginal profit equals zero:
A.
the firm can increase profits by increasing output.
B.
the firm can increase profits by decreasing output.
C.
marginal revenue equals average revenue.
D.
profit is maximized.
【简答题】长期零经济利润条件(long-run zero-profit condition)
【单选题】When a profit-maximizing firm in a competitive market has zero economic profit, accounting profit
A.
is negative (accounting losses).
B.
is positive.
C.
is also zero.
D.
could be positive, negative or zero.
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