A.变量未定义的提示
B.10
C.20
D..F.
该程序运行后屏幕显示的结果是()。 S=0 FOR X=2 TO 10 STEP 2 S=S+X ENDFOR ?S RETURN
A.10
B.20
C.30
D.40
下表显示了一个以常数边际成本10美元生产的垄断者面临的需求曲线。
(1)计算该厂商的边际收益曲线。
(2)该厂商的利润最大化产量和价格是多少?该厂商的利润为多少?
(3)在一竞争性行业中均衡价格和数量各为多少?
(4)如果该垄断者被迫以完全竞争的均衡价格生产,社会得益是什么?结果是谁获益谁受损?
The following table shows the demand curve facing a monopolist who produces at a constant marginal cost of $ 10.
a. Calculate the firm' s marginal revenue curve.
b. What are the firm's profit - maximizing output and price? What is its profit?
c. What would the equilibrium price and quantity be in a competitive industry?
d. What would the social gain be if this monopolist were forced to produce and price at the competitive equilibrium? Who would gain and lose as a result?
A.9 < 1 and 10 < 9 or 2 > 1
B.'abc' < 'ABC'
C.8 > 4 > 2
D.(3 is 4) == 0
A.9
B.10
C.12
D.18
以下程序的输出结果是______。
#define MAX(x,y) (x)>(y)?(x):(y)
main()
{ int a=5,b=2,c=3,d=3,t:
t=MAX(a+b,c+d)*10;
printf("%d\n",t);
A.5
B.3
C.8
D.10
如果在命令窗口执行“LIST名称”命令,主窗口中显示:
记录号 名称
1 电视机
2 计算机
3 电话线
4 电冰箱
5 电线
假定名称字段为字符型、宽度为6,那么下面程序段的输出结果是( )。
GO 2
SCAN NEXT 4 FOR LEFT(名称,2)="电"
IF RIGHT(名称,2)="线"
EXIT
ENDIF
ENDSCAN
?名称
A.电话线 B.电线 C.电冰箱 D.电视机