第五版测试题库
Chapter 28
Unemployment
TRUE/FALSE
1. Most people rely on income other than their labor earnings to maintain their standard of living.
ANS: F DIF: 1 REF: 28-0
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Income | Standard of living MSC: Definitional
2. The amount of unemployment that a country typically experiences is a determinant of that country's standard
of living.
ANS: T DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Unemployment | Standard of living MSC: Definitional
3. Some degree of unemployment is inevitable in a complex economy.
ANS: T DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
4. The amount of unemployment varies little over time and across countries.
ANS: F DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
5. When a country keeps its workers as fully employed as possible, it achieves a higher level of GDP than it
would if it left many of its workers standing idle.
ANS: T DIF: 1 REF: 28-0
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Employment | GDP MSC: Definitional
6. An economy’s natural rate of unemployment refers to the amount of unemployment that the eco nomy
normally experiences.
ANS: T DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
7. Cyclical unemployment refers to the year-to-year fluctuations in unemployment around its natural rate. ANS: T DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation TOP: Cyclical unemployment
MSC: Definitional
8. The natural rate of unemployment is closely associated with the short-run ups and downs of economic activity. ANS: F DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
9. The natural rate of unemployment is the desirable rate of unemployment for an economy.
ANS: F DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
10. The natural rate of unemployment is constant over time.
ANS: F DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
1872
Chapter 28/Unemployment 1873 11. The natural rate of unemployment is impervious to economic policy.
ANS: F DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
12. Government policy can do nothing about the natural rate of unemployment.
ANS: F DIF: 2 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Interpretive
13. The natural rate of unemployment is a type of unemployment that does not go away on its own even in the
long run.
ANS: T DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
14. Long-run unemployment arises from a single problem that has a single solution.
ANS: F DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
15. There is no easy way for policymakers to reduce the economy’s natural rate of unemployment.
ANS: T DIF: 1 REF: 28-0
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
16. Measuring unemployment is the job of the Bureau of Labor Statistics.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Bureau of Labor Statistics MSC: Definitional
17. Measuring unemployment is the job of the Bureau of Labor Statistics, which is part of the U.S. Department of
Commerce.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Bureau of Labor Statistics MSC: Definitional
18. Every week, the Bureau of Labor Statistics produces data on unemployment.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Bureau of Labor Statistics MSC: Definitional
19. The Bureau of Labor Statistics produces data on unemployment, types of employment, length of the average
workweek, and the duration of unemployment.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Bureau of Labor Statistics MSC: Definitional
20. The Bureau of Labor Statistics produces data on unemployment and other aspects of the labor market from a
regular survey of about 600 households, called the Current Population Survey.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Bureau of Labor Statistics MSC: Definitional
21. The Bureau of Labor Statistics produces data on unemployment and other aspects of the labor market from a
regular survey of about 60,000 households, called the Current Population Survey.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Bureau of Labor Statistics MSC: Definitional
1874 Chapter 28/Unemployment
22. The Bureau of Labor Statistics produces data on unemployment and other aspects of the labor market from a
regular survey of about 60,000 households, called the Census.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Bureau of Labor Statistics MSC: Definitional
23. The Bureau of Labor Statistics places each adult (aged 16 and older) of each surveyed household into one of
three categories: employed, unemployed, and not in the labor force.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Bureau of Labor Statistics MSC: Definitional
24. The Bureau of Labor Statistics places each adult (aged 16 and older) of each surveyed household into one of
four categories: employed, underemployed, unemployed, and not in the labor force.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Bureau of Labor Statistics MSC: Definitional
25. The Bureau of Labor Statistics’ “employed” category includes those who worked as paid employees, worked
in th eir own business, or worked as unpaid workers in a family member’s business.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Employment MSC: Definitional
26. Only paid worker s are included in the Bureau of Labor Statistics’ “employed” category.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Employment MSC: Interpretive
27. Both full-time and part-time workers are included in the Bureau of Labor Statistics’ “employed” category. ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Employment MSC: Definitional
28. Some adul ts who were not working are included in the Bureau of Labor Statistics’ “employed” category. ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Employment MSC: Interpretive
29. Adults who were not working but who had jobs from which they were temporarily absent are included in the
Bureau of Labor Statistics’ “employed” category.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Employment MSC: Definitional
30. Adults who were waiting to be recalled to a job from which they had been laid off are included in the Bureau
of Labor Statistics’ “employed” category.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Employment MSC: Interpretive
31. The Bureau of Labor Statistics’ “unemployed” category includes those who were not employed, were
available for work, and had tried to find employment during the previous 4 weeks.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | Unemployment MSC: Definitional
Chapter 28/Unemployment 1875 32. Every adult who was not employed during the previous 4 weeks is included in the Bureau of Labor Statistics’
“unemployed” category.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | Unemployment MSC: Interpretive
33. Someone who is without work but is not looking for work i s included in the Bureau of Labor Statistics’
“unemployed” category.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | Unemployment MSC: Interpretive
34. Full-time students and homemakers are included in the Bureau of Labor Statistics’ “unemployed” category. ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | Unemployment MSC: Interpretive
35. Stay-at-home fathers are included in the Bureau of Labor Statistics’ “unemployed” category.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | Unemployment MSC: Interpretive
36. Adults who were waiting to be recalled to a job from which they had been laid off are included in the Bureau
of Labor Statistics’ “unemployed” category.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | Unemployment MSC: Definitional
37. Retirees are included in the Bureau of La bor Statistics’ “not in the labor force” category.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Labor force MSC: Definitional
38. The adult population must equal the sum of the employed, the unemployed, and those not in the labor force. ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Adult population MSC: Interpretive
39. The adult population must equal the sum of the employed and the unemployed.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Adult population MSC: Interpretive
40. The Bureau of Labor Statistics defines the labor force as the sum of the employed and the unemployed. ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Labor force MSC: Definitional
41. The labor force minus the number of employed equals the number of unemployed.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Interpretive
42. The Bureau of Labor Statistics defines the unemployment rate as the percentage of the adult population that is
unemployed.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | Unemployment rate MSC: Definitional
1876 Chapter 28/Unemployment
43. The Bureau of Labor Statistics defines the unemployment rate as the percentage of the labor force that is
unemployed.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | Unemployment rate MSC: Definitional
44. The Bureau of Labor Statistics computes unemployment rates for the entire adult population and for more
narrowly defined groups.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | Unemployment rate MSC: Definitional
45. The Bureau of Labor Statistics defines the labor-force participation rate as the percentage of the labor force
that is employed.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Labor-force participation rate MSC: Definitional
46. The Bureau of Labor Statistics defines the labor-force participation rate as the percentage of the total adult
population that is in the labor force.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Labor-force participation rate MSC: Definitional
47. The labor-force participation rate is the percentage of the adult population that is either employed or
unemployed.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Interpretive
48. The labor-force participation rate tells us the fraction of the population that is able to participate in the labor
market.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
49. The labor-force participation rate tells us the fraction of the population that has chosen to participate in the
labor market.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
50. The Bureau of Labor Statistics computes labor-force participation rates for the entire adult population and for
more narrowly defined groups.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Labor-force participation rate MSC: Definitional
Table 28-5
2010 Labor Data for Wrexington
51. Refer to Table 28-5. The total adult population of Wrexington in 2010 is 30,000.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Adult population MSC: Applicative
Chapter 28/Unemployment 1877 52. Refer to Table 28-5. The total adult population of Wrexington in 2010 is 12,250.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Adult population MSC: Applicative
53. Refer to Table 28-5. The labor force of Wrexington in 2010 is 12,250.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor force MSC: Applicative
54. Refer to Table 28-5. The labor force of Wrexington in 2010 is 10,000.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor force MSC: Applicative
55. Refer to Table 28-5. The unemployment rate of Wrexington in 2010 is about 18.4 percent.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Applicative
56. Refer to Table 28-5. The unemployment rate of Wrexington in 2010 is about 7.5 percent.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Applicative
57. Refer to Table 28-5. The labor-force participation rate of Wrexington in 2010 is about 40.8 percent.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Applicative
58. Refer to Table 28-5. The labor-force participation rate of Wrexington in 2010 is about 33.3 percent.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Applicative
59. Within the U.S. population, women ages 20 and older have lower rates of labor-force participation than men. ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
60. Within the U.S. population, women ages 20 and older have similar rates of labor-force participation as men. ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
61. Within the U.S. population, men and women have similar rates of unemployment.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
62. Within the U.S. population, women have higher rates of unemployment than men.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
63. Within the U.S. population, blacks ages 20 and older have similar rates of labor-force participation as whites. ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
1878 Chapter 28/Unemployment
64. Within the U.S. population, blacks ages 20 and older have lower rates of labor-force participation than whites. ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
65. Within the U.S. population, blacks have higher rates of unemployment than whites.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
66. Within the U.S. population, blacks and whites have similar rates of unemployment.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
67. Within the U.S. population, teenagers have lower rates of labor-force participation than older workers.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
68. Within the U.S. population, teenagers have similar rates of labor-force participation as older workers.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
69. Within the U.S. population, teenagers have higher rates of unemployment than older workers.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
70. Within the U.S. population, teenagers have similar rates of unemployment as older workers.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
71. Data on the unemployment rate in the U.S. since 1960 show that the economy always has some unemployment
and that the amount changes from year to year.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
72. Data on the unemployment rate in the U.S. since 1960 show that the unemployment rate sometimes is zero. ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Interpretive
73. The normal rate of unemployment around which the unemployment rate fluctuates is called the natural rate of
unemployment.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
74. The normal rate of unemployment around which the unemployment rate fluctuates is called cyclical
unemployment.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
Chapter 28/Unemployment 1879 75. The deviation of unemployment from its natural rate is called cyclical unemployment.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Cyclical unemployment
MSC: Definitional
76. Economists at the Congressional Budget Office estimated that for 2007, the U.S. natural rate of unemployment
was 4.8 percent.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
77. In 2007, the U.S. natural rate of unemployment was estimated to be 4.8 percent, which was close to the actual
rate of unemployment of 4.6 percent.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Natural rate of unemployment MSC: Definitional
78. Causes of the changing role of women in American society over the past several decades include new
technologies that have reduced the amount of time required to complete routine household tasks, improved birth control, and changing political and social attitudes.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Role of women MSC: Interpretive
79. Over the past several decades, the difference between the labor-force participation rates of men and women in
the U.S. has gradually decreased.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
80. Over the past several decades, the difference between the labor-force participation rates of men and women in
the U.S. has gradually increased.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
81. Over the past several decades in the United States, the labor-force participation rate of women has increased
and the labor-force participation rate of men had decreased.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
82. Over the past several decades in the United States, the labor-force participation rate of women has increased
and the labor-force participation rate of men had remained steady.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Definitional
83. Causes of t he decline in the U.S. men’s labor-force participation rate over the past several decades include
young men now staying in school longer than their fathers and grandfathers did, older men now retiring earlier and living longer, and more fathers now staying at home to raise their children.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Interpretive
84. Even though the difference in labor-force participation rates of U.S. males and females has narrowed, the
labor-force participation rate of males remains higher than that of females.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Labor-force participation rate MSC: Interpretive
1880 Chapter 28/Unemployment
85. Measuring the amount of unemployment in the economy is a straightforward task.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
86. More than one-third of the unemployed are recent entrants into the labor force.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
87. More than three-fourths of the unemployed are recent entrants into the labor force.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
88. Not all unemployment ends with the job seeker finding a job.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
89. Almost half of all spells of unemployment end when the unemployed person leaves the labor force.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
90. Almost nine-tenths of all spells of unemployment end when the unemployed person leaves the labor force. ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
91. Because people move into and out of the labor force so often, statistics on unemployment are difficult to
interpret.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
92. People who report being unemployed but who, in fact, are not trying hard to find a job are really not in the
labor force and therefore cause the reported unemployment rate to be higher than it would otherwise be. ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Interpretive
93. Rupert is collecting unemployment insurance benefits. To continue to receive his benefits, he must be
looking for work. Because he’d like to continue collecting benefits rather than take a job, he applies at places that are unlikely to hire him. People like Rupert make the reported unemployment rate less than it would otherwise be.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Interpretive
94. People who report being unemployed but who, in fact, are working for “under the table” pay to avoid taxes on
their earnings are really employed and therefore cause the reported unemployment rate to be higher than it would otherwise be.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Interpretive
Chapter 28/Unemployment 1881 95. People who report being not in the labor force but who, in fact, want to work but have given up trying to find a
job after an unsuccessful search are really unemployed and therefore cause the reported unemployment rate to be lower than it would otherwise be.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Interpretive
96. Discouraged workers are people who want to work but have given up trying to find a job after an unsuccessful
search.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Discouraged workers
MSC: Definitional
97. It is best to view the official unemployment rate as a useful but imperfect measure of joblessness.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
98. The unemployment rate reported by the Bureau of Labor Statistics clearly understates the true unemployment
rate.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Interpretive
99. The Bureau of Labor Statistics defines marginally attached workers as persons who currently are neither
working nor looking for work but indicate that they want and are available for a job and have looked for work sometime in the recent past.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Marginally attached workers MSC: Definitional
100. The Bureau of Labor Statistics defines discouraged workers as marginally attached workers who have given a job-market related reason for not currently looking for a job.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Discouraged workers MSC: Definitional
101. Th e Bureau of Labor Statistics’ U-1 measure of joblessness is smaller than its U-6 measure of joblessness. ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | U-1 | U-6 MSC: Interpretive
102. The Bureau o f Labor Statistics’ U-1 measure of joblessness is larger than its U-6 measure of joblessness. ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | U-1 | U-6 MSC: Interpretive
103. The Bureau of Labor St atistics’ U-1 measure of joblessness includes only very long-term unemployed. ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | U-1 MSC: Interpretive
104. The Bureau of Labor Statistics’ U-2 measure of joblessness includes job losers and job leavers.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | U-2 MSC: Interpretive
105. The Bureau of Labor Statistics’ U-3 measure of joblessness is the official unemployment rate.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | U-3 MSC: Interpretive
1882 Chapter 28/Unemployment
106. The Bureau of Labor Statistics’ U-4 measure of joblessness includes discouraged workers.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | U-4 MSC: Interpretive
107. The Bureau of Labor Statistics’ U-5 measure of joblessness is the official unemployment rate.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | U-5 MSC: Interpretive
108. The Bureau of Labor Statistics’ U-5 measure of joblessness includes marginally attached workers.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation
TOP: Bureau of Labor Statistics | U-5 MSC: Interpretive
109. Most spells of unemployment are short, and most unemployment observed at any given time is long-term. ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
110. Most spells of unemployment are long, and most unemployment observed at any given time is short-term. ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
111. Most spells of unemployment are short, and most unemployment observed at any given time is short-term. ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
112. Most spells of unemployment are long, and most unemployment observed at any given time is long-term. ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
113. Data on unemployment indicate that most people who become unemployed will soon find jobs.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Interpretive
114. In an ideal labor market, wages would adjust to balance the quantity of labor supplied and the quantity of labor demanded, ensuring that all workers are always fully employed.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Labor markets TOP: Wages | Employment
MSC: Definitional
115. There are always some workers without jobs, even when the overall economy is doing well.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
116. The unemployment rate never falls to zero.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
117. The unemployment rate sometimes falls to zero.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment rate
MSC: Definitional
Chapter 28/Unemployment 1883 118. One explanation for long-run unemployment is that it takes time for workers to search for the jobs that are best suited for them.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment | Job search MSC: Definitional
119. The unemployment that results from the process of matching workers and jobs is called frictional unemployment.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Frictional unemployment
MSC: Definitional
120. The unemployment that results from the process of matching workers and jobs is called structural unemployment.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Frictional unemployment
MSC: Definitional
121. Frictional unemployment is often thought to explain relatively short spells of unemployment.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Frictional unemployment
MSC: Definitional
122. Frictional unemployment is often thought to explain relatively long spells of unemployment.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Frictional unemployment
MSC: Definitional
123. Some long-run unemployment may be explained by the fact that the number of jobs available in some labor markets may be insufficient to give a job to everyone who wants one.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
124. The unemployment that results from the quantity of labor supplied exceeding the quantity demanded is called structural unemployment.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Structural unemployment
MSC: Definitional
125. The unemployment that results from the quantity of labor supplied exceeding the quantity demanded is called frictional unemployment.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Structural unemployment
MSC: Definitional
126. Structural unemployment is often thought to explain relatively long spells of unemployment.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Structural unemployment
MSC: Definitional
127. Structural unemployment is often thought to explain relatively short spells of unemployment.
ANS: F DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Structural unemployment
MSC: Definitional
128. Structural unemployment results when wages are, for some reason, set above the level that brings supply and demand into equilibrium.
ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Structural unemployment
MSC: Definitional
1884 Chapter 28/Unemployment
129. Three possible reasons for an above-equilibrium wage are minimum-wage laws, unions, and efficiency wages. ANS: T DIF: 1 REF: 28-1
NAT: Analytic LOC: Unemployment and inflation TOP: Structural unemployment MSC: Definitional
130. Every month, the Bureau of Labor Statistics surveys 160,000 business establishments to help determine the number of jobs the economy has gained or lost.
ANS: T DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Jobs number MSC: Interpretive
131. The Bureau of Labor Statistics’ household survey and establishment survey both yield the same results about total employment.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Employment MSC: Interpretive
132. The Bureau of Labor Statistics’ household survey and establishment survey both yield information about unemployment.
ANS: F DIF: 2 REF: 28-1
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Bureau of Labor Statistics | Employment MSC: Interpretive
133. One reason economies always experience some unemployment is job search.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment | Job search MSC: Definitional
134. Job search is the process of matching workers with appropriate jobs.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Job search
MSC: Definitional
135. If all workers and all jobs were the same such that all workers were equally well suited for all jobs, then job search would not be a problem.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Job search
MSC: Definitional
136. If all workers and all jobs were the same such that all workers were equally well suited for all jobs, then there would be no frictional unemployment.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Frictional unemployment MSC: Interpretive
137. Frictional unemployment is often the result of changes in the demand for labor among different firms. ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Frictional unemployment MSC: Definitional
138. The demand for labor by a certain firm fluctuates as the demand for that firm’s product fluctuates.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Labor markets TOP: Labor demand | Demand
MSC: Interpretive
139. The demand for labor by a certain firm is independent of the demand for that firm’s product.
ANS: F DIF: 2 REF: 28-2
NAT: Analytic LOC: Labor markets TOP: Labor demand | Demand
MSC: Interpretive
Chapter 28/Unemployment 1885 140. Employment can rise in one region of the country while it falls in another.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Employment MSC: Definitional
141. Changes in the composition of demand among industries or regions are called sectoral shifts.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Sectoral shifts MSC: Definitional
142. Sectoral shifts temporarily cause unemployment.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Sectoral shifts | Unemployment MSC: Definitional
143. Sectoral shifts contribute to frictional unemployment.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Sectoral shifts | Frictional unemployment MSC: Interpretive
144. Frictional unemployment is inevitable because the economy is always changing.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Frictional unemployment
MSC: Definitional
145. A century ago, the four industries with the largest employment in the United States were cotton goods, woolen goods, men’s clothing, and lumber.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Employment MSC: Definitional
146. Today, the four industries with the largest employment in the United States are autos, aircraft, communications, and electrical components.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: The study of economics and definitions of economics
TOP: Employment MSC: Definitional
147. Data show that at least 10 percent of U.S. manufacturing jobs are destroyed every year.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
148. Data show that at least 20 percent of U.S. manufacturing jobs are destroyed every year.
ANS: F DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
149. More than 3 percent of U.S. workers leave their jobs in a typical month.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
150. More than 30 percent of U.S. workers leave their jobs in a typical month.
ANS: F DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment
MSC: Definitional
1886 Chapter 28/Unemployment
151. The destruction of manufacturing jobs and workers leaving their jobs to find better ones both contribute to frictional unemployment.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Frictional unemployment MSC: Interpretive
152. Public policy can reduce the economy’s natural rate of unemployment.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Public policy | Natural rate of unemployment MSC: Definitional
153. Public policy cannot reduce the economy’s natural rate of unemployment.
ANS: F DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Public policy | Natural rate of unemployment MSC: Definitional
154. Public policy can reduce frictional unemployment.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Public policy | Frictional unemployment MSC: Interpretive
155. Policies that reduce the time it takes unemployed workers to find new jobs can reduce th e economy’s natural rate of unemployment.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Public policy | Natural rate of unemployment MSC: Definitional
156. Government-run employment agencies and public training programs both seek to reduce frictional unemployment.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Public policy | Frictional unemployment MSC: Interpretive
157. Advocates of government-run employment agencies and public training programs believe they make job search more efficient.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Public policy | Job search | Efficiency MSC: Interpretive
158. Critics of government-run employment agencies and public training programs argue that the private market is better at matching workers and jobs than the government is.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Public policy | Job search MSC: Interpretive
159. Most job search in the U.S. economy takes place without intervention by the government.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Job search
MSC: Definitional
160. Most job search in the U.S. economy takes place with the help of the government.
ANS: F DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Job search
MSC: Definitional
161. Public policy, without intending to do so, can increase frictional unemployment.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Public policy | Frictional unemployment MSC: Interpretive
Chapter 28/Unemployment 1887 162. Unemployment insurance increases frictional unemployment.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Unemployment insurance | Frictional unemployment MSC: Definitional
163. Unemployment insurance reduces hardships of unemployment but also increases the amount of structural unemployment.
ANS: F DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Unemployment insurance | Frictional unemployment MSC: Interpretive
164. Unemployment insurance is designed to offer workers partial protection against job loss.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment insurance
MSC: Definitional
165. The unemployed who quit their jobs, were fired for cause, or just entered the labor force are not eligible for unemployment insurance.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment insurance
MSC: Definitional
166. The unemployed who quit their jobs, were fired for cause, or just entered the labor force are eligible for unemployment insurance.
ANS: F DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment insurance
MSC: Definitional
167. A typical American worker covered by unemployment insurance receives 50 percent of his former wages for
52 weeks.
ANS: F DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment insurance
MSC: Definitional
168. Unemployment insurance reduces the incentive for the unemployed to find and take new jobs.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Unemployment insurance | Incentives MSC: Interpretive
169. Unemployment insurance causes workers to be less likely to seek guarantees of job security when they negotiate with employers over the terms of employment.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment insurance
MSC: Definitional
170. Studies have shown that the design of the unemployment insurance system reduces the job search effort of the unemployed.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment insurance
MSC: Interpretive
171. Some economists have argued that unemployment insurance improves the ability of the economy to match each worker with the most appropriate job.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Economists | Unemployment insurance MSC: Definitional
172. The unemployment rate is an imperfect measure of a nation’s overall level of economic well-being.
ANS: T DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Unemployment rate | Economic well-being MSC: Definitional
1888 Chapter 28/Unemployment
173. Most economists agree that eliminating unemployment insurance would increase the amount of unemployment in the economy.
ANS: F DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Economists | Unemployment insurance MSC: Definitional
174. Most economists agree that eliminating unemployment insurance would increase the nation’s overall level of well-being.
ANS: F DIF: 1 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation
TOP: Economists | Unemployment insurance | Economic well-being
MSC: Definitional
175. Other things the same, countries that offer more generous and longer-lasting unemployment insurance benefits are likely to have higher unemployment rates.
ANS: T DIF: 2 REF: 28-2
NAT: Analytic LOC: Unemployment and inflation TOP: Unemployment insurance MSC: Interpretive
176. Structural unemployment results when the number of jobs is insufficient for the number of workers.
ANS: T DIF: 1 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation TOP: Structural unemployment
MSC: Definitional
177. Minimum wages are the predominant reason for unemployment in the U.S. economy.
ANS: F DIF: 1 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation
TOP: Minimum wage | Unemployment MSC: Definitional
178. When a minimum-wage law forces the wage to remain above the level that balances supply and demand, it raises the quantity of labor supplied and reduces the quantity of labor demanded compared to the equilibrium level.
ANS: T DIF: 1 REF: 28-3
NAT: Analytic LOC: Labor markets TOP: Minimum wage
MSC: Definitional
179. When a minimum-wage law forces the wage to remain above the level that balances supply and demand, it reduces the quantity of labor supplied and raises the quantity of labor demanded compared to the equilibrium level.
ANS: F DIF: 1 REF: 28-3
NAT: Analytic LOC: Labor markets TOP: Minimum wage
MSC: Definitional
180. When a minimum-wage law forces the wage to remain above the level that balances supply and demand, the result is a surplus of labor.
ANS: T DIF: 2 REF: 28-3
NAT: Analytic LOC: Labor markets TOP: Minimum wage
MSC: Interpretive
181. When a minimum-wage law forces the wage to remain above the level that balances supply and demand, the result is a shortage of labor.
ANS: F DIF: 2 REF: 28-3
NAT: Analytic LOC: Labor markets TOP: Minimum wage
MSC: Interpretive
182. When a minimum-wage law forces the wage to remain above the level that balances supply and demand, there are more workers willing to work than there are jobs, so some workers are unemployed.
ANS: T DIF: 2 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation
TOP: Minimum wage | Unemployment MSC: Interpretive
Chapter 28/Unemployment 1889 183. Minimum-wage laws are one reason there is always some unemployment in the U.S. economy.
ANS: T DIF: 1 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation
TOP: Minimum wage | Unemployment MSC: Definitional
184. Minimum-wage laws affect all workers.
ANS: F DIF: 2 REF: 28-3
NAT: Analytic LOC: Labor markets TOP: Minimum wage
MSC: Interpretive
185. Most U.S. workers have wages well above the legal minimum, so minimum-wage laws do not prevent the wage from adjusting to balance supply and demand.
ANS: T DIF: 1 REF: 28-3
NAT: Analytic LOC: Labor markets TOP: Minimum wage
MSC: Definitional
186. Minimum-wage laws matter most for the least skilled and least experienced members of the labor force, such as teenagers.
ANS: T DIF: 1 REF: 28-3
NAT: Analytic LOC: Labor markets TOP: Minimum wage
MSC: Definitional
187. It is only among the least skilled and least experienced members of the labor force that minimum-wage laws cause unemployment.
ANS: T DIF: 2 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation
TOP: Minimum wage | Unemployment MSC: Interpretive
188. If the wage is kept above the equilibrium level for any reason, the result is unemployment.
ANS: T DIF: 1 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation TOP: Wages | Unemployment
MSC: Definitional
189. If the wage is kept above the equilibrium wage for any reason, the result is structural unemployment.
ANS: T DIF: 2 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation
TOP: Wages | Structural unemployment MSC: Interpretive
190. If the wage is kept above the equilibrium level because of minimum-wage laws, then the result is unemployment; if the wage is kept above the equilibrium level for some other reason, the result need not be unemployment.
ANS: F DIF: 2 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation TOP: Wages | Unemployment
MSC: Interpretive
191. When job search is the explanation for unemployment, workers are searching for the jobs that best suit their tastes and skills, but when the wage is above the equilibrium level, the quantity of labor supplied exceeds the quantity of labor demanded, and workers are unemployed because they are waiting for jobs to open up. ANS: T DIF: 1 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation
TOP: Frictional unemployment | Structural unemployment MSC: Definitional
192. U.S. Department of Labor data show that minimum-wage workers tend to be young, less educated, more likely to be working part time, and concentrated in the leisure and hospitality industry.
ANS: T DIF: 1 REF: 28-3
NAT: Analytic LOC: Unemployment and inflation TOP: Minimum wage
MSC: Definitional
1890 Chapter 28/Unemployment
193. A union is an employer association that bargains with workers over wages, benefits, and working conditions. ANS: F DIF: 1 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Definitional
194. In the 1940s and 1950s, about one-third of U.S. workers belonged to unions, but today, only about one-fifth of U.S. workers belong to unions.
ANS: F DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Interpretive
195. Today, unions play a larger role in Europe than they do in the U.S.
ANS: T DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Interpretive
196. When a union is present in a labor market, wages are not determined by the equilibrium of supply and demand.
ANS: T DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions | Wages
MSC: Interpretive
197. A union is a type of cartel.
ANS: T DIF: 1 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Definitional
198. Like any cartel, a union is a group of sellers acting together in the hope of exerting their joint market power. ANS: T DIF: 1 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Definitional
199. The process by which unions and firms agree on the terms of employment is called collective bargaining. ANS: T DIF: 1 REF: 28-4
NAT: Analytic LOC: Labor markets
TOP: Unions | Collective bargaining MSC: Definitional
200. If a union and a firm cannot reach an agreement on the terms of employment, then the union can organize a withdrawal of labor from the firm, called a strike.
ANS: T DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions | Strikes
MSC: Interpretive
201. Economists have found that union workers earn about 30 to 40 percent more than similar workers who do not belong to unions.
ANS: F DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Economists | Unions | Wages MSC: Interpretive
202. When a union raises the wage above the equilibrium level, it reduces the quantity of labor supplied and raises the quantity of labor demanded, resulting in unemployment.
ANS: F DIF: 1 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions | Unemployment
MSC: Definitional
203. The introduction of a union into a firm benefits all of that firm’s workers.
ANS: F DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Interpretive
Chapter 28/Unemployment 1891 204. Some of a firm’s workers are made worse off by the introduction of a union.
ANS: T DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Interpretive
205. Unions are often thought to cause conflict between different groups of workers -- between the insiders who benefit from high union wages and the outsiders who do not get the union jobs.
ANS: T DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Interpretive
206. When unions raise wages in one part of the economy, the supply of labor increases in other parts of the economy, which reduces wages in industries that are not unionized.
ANS: T DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions | Wages
MSC: Interpretive
207. Workers in unions reap the benefit of collective bargaining, while workers not in unions bear some of the cost. ANS: T DIF: 1 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Definitional
208. Unions are exempt from U.S. antitrust laws.
ANS: T DIF: 1 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions | Antitrust laws
MSC: Definitional
209. In the U.S., it is illegal for employers to interfere when workers try to organize unions.
ANS: T DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions
MSC: Interpretive
210. In the U.S., the National Labor Relations Board is the government agency that enforces workers’ right to unionize.
ANS: T DIF: 1 REF: 28-4
NAT: Analytic LOC: Labor markets
TOP: Unions | National Labor Relations Board MSC: Definitional
211. Right-to-work laws give workers in a unionized firm the right to choose whether to join the union.
ANS: T DIF: 1 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions | Right-to-work laws MSC: Definitional
212. Right-to-work laws allow striking union members to be permanently replaced.
ANS: F DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Unions | Right-to-work laws MSC: Interpretive
213. Most economists believe unions are bad for the economy as a whole.
ANS: F DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets TOP: Economists | Unions
MSC: Interpretive
214. Critics of unions argue that unions cause the allocation of labor to be inefficient and inequitable.
ANS: T DIF: 2 REF: 28-4
NAT: Analytic LOC: Labor markets
TOP: Unions | Efficiency | Equality MSC: Interpretive
建筑工程测量试题库答案(197题)
《工程测量》试题库参考答案 一、填空题 1、测量工作的基准线是铅垂线。 2、测量工作的基准面是水准面。 3、测量计算的基准面是参考椭球面。 4、真误差为观测值减真值。 5、水准仪的操作步骤为粗平、照准标尺、精平、读数。 6、相邻等高线之间的水平距离称为等高线平距。 7、标准北方向的种类有真北方向、磁北方向、坐标北方向。 8、用测回法对某一角度观测4测回，第3测回零方向的水平度盘读数应配置为90°左右。 9、三等水准测量中丝读数法的观测顺序为后、前、前、后、。 10、四等水准测量中丝读数法的观测顺序为后、后、前、前、。 11、设在测站点的东南西北分别有A、B、C、D四个标志，用方向观测法观测水平角，以B为零方向，则盘左的观测顺序为B—C—D—A—B。 12、在高斯平面直角坐标系中，中央子午线的投影为坐标x轴。 13、权等于1的观测量称单位权观测。 14、已知A点高程为14.305m，欲测设高程为15.000m的B点，水准仪安置在A，B两点中间，在A尺读数为2.314m，则在B尺读数应为1.619m，才能使B尺零点的高程为设计值。 15、水准仪主要由基座、水准器、望远镜组成。 16、经纬仪主要由基座、水平度盘、照准部组成。 17、用测回法对某一角度观测6测回，则第4测回零方向的水平度盘应配置为90°左右。 18、等高线的种类有首曲线、计曲线、间曲线、助曲线。 19、设观测一个角度的中误差为±8″，则三角形内角和的中误差应为±13.856″。 20、用钢尺丈量某段距离，往测为112.314m，返测为112.329m，则相对误差为1/7488。 21、水准仪上圆水准器的作用是使竖轴铅垂，管水准器的作用是使望远镜视准轴水平。 22、望远镜产生视差的原因是物像没有准确成在十字丝分划板上。 23、通过平均海水面的水准面称为大地水准面。 24、地球的平均曲率半径为6371 km。 25、水准仪、经纬仪或全站仪的圆水准器轴与管水准器轴的几何关系为相互垂直。 26、直线定向的标准北方向有真北方向、磁北方向和坐标北方向。 27、经纬仪十字丝分划板上丝和下丝的作用是测量视距。 28、水准路线按布设形式分为闭合水准路线、附合水准路线、支水准路线。 29、某站水准测量时，由A点向B点进行测量，测得AB两点之间的高差为0.506m，且B点水准尺的读数为2.376m，则A点水准尺的读数为 2.882 m。 30、三等水准测量采用“后—前—前—后”的观测顺序可以削弱仪器下沉的影响。
测试技术题目及答案
2、离散信号的频谱是_连续_（连续/离散）信号。 5、如果一个信号的最高频率为60Hz ，为了防止在时域采样过程中出现混叠现象，采样频率应该大于_120_Hz 。 7、调幅是指一个高频的正（余）弦信号与被测信号_相乘__，使高频信号的幅值随被测信号的_频率变化_而变化。信号调幅波可以看作是载波与调制波的_相乘__ 。 9、绘制周期信号)(t x 的单边频谱图，依据的数学表达式是_傅氏三角级数中的各项系数_， 而双边频谱图的依据数学表达式是_傅氏复指数级数中的各项系数。 11、单位脉冲函数0()t t δ-与在0t 点连续的模拟信号()f t 的下列积分：dt t t t f )()(0-? ∞ ∞ -δ= _ f （t0）_。这性质称为_积分筛选特性（抽样特性、筛选特性）。 12、某一阶系统的频率响应函数为1 21)(+= ωωj j H ，输入信号2 sin )(t t x =，则输出信号 )(t y 的频率为=ω__ _1/2__，幅值=y __ =φ_ 0 45-__。 频率保持特性， 13、满足测试装置不失真测试的频域条件是_幅频特性为一常数和_相频特性与频率成线性 关系_。 14、根据载波受调制的参数不同，调制可分为_调幅_、__ 调频_、_调相 _。 15、常用滤波器的上、下截止频率1c f 、2c f 的定义为_ 幅频特性曲线降为最大值的1 倍 时对应的频率为截止频率_，其带宽B ＝ __21c c f f -___，若为倍频程滤波器1c f 与2c f 的关系为_212c c f f =_。 16、若某一信号的自相关函数为)cos(ωτA ，则该信号的均方值为2 x ψ=_A ，均方根值为 x rms 17、RC 低通滤波器中RC 值愈_大_，则上截止频率愈低。 18、从时域看，系统的输出是其输入与该系统__脉冲响应函数__的卷积。 20、当被测信号不随时间而变化或相对观察时间而言其变化是极其缓慢的，此时的测试称为_静态测试 。 21、测试信号随时间而变化的测试称为__动态测试_____。
在线测试题目一
在线测试（一） 1.王老师利用DV拍摄了一些视频资料，他打算在课堂上展示，他可以选择电视机与DV直接相连接，进行播放 A. 正确 B. 错误答案：A 2.多媒体技术创造出集文、图、声、像于一体的新型信息处理模型。（） A. 正确 B. 错误答案：A 3.可以用笔等尖锐的物体在电子白板上书写。 A. 正确 B. 错误答案：B 4.社交媒体正在日益改变人们互动、发表观点及信息、人际交流的方式。 A. 正确 B. 错误答案：A 5.可以使用Mind Manager软件制作网页。 A. 正确 B. 错误答案：A 6.Scratch是MIT (麻省理工学院) 发展的一套新的程序语言，可以用来创造交互式故事、动画、游戏、音乐和艺术 A. 正确 B. 错误答案：A 7.探究学习的核心是提出假设，获取数据，验证假设。 A. 正确 B. 错误答案：A 8.网络教室环境下进行小组活动，每个小组人数以4-6人为宜 A. 正确 B. 错误答案：A 9.幻灯片母版设置可以起到的作用是统一设置整套幻灯片的标志图片或多媒体元素
A. 正确 B. 错误答案：A 10.网络课程的学习评价主要是对学习者学习行为及表现的评价，设计中应根据评价的内容及学习者学习活动的特点选择不同的评价方式。 A. 正确 B. 错误答案：A 11.调整图像尺寸步骤：启动美图秀秀-打开-选择图像-尺寸。 A. 正确 B. 错误答案：A 12.在多媒体教学环境中，教师的作用是创设适合于学生先前经验和教学内容的情境，激发学生们的学习兴趣和探索欲望，让学生利用信息资源、同学资源、教师资源主动建构知识，教师从知识的传授者变为学生学习活动的设计者、组织者和促进者。 A. 正确 B. 错误答案：A 13.在互联网中，学生只能进行远程同步的交流，不能进行异步的互动。（） A. 正确 B. 错误 答案：B 14.将演示文稿发布为网页时，允许在网页中播放所有动画效果。 A. 正确 B. 错误答案：B 15.使用计算机应遵守行业道德规范。 A. 正确 B. 错误答案：A 16.在投影机使用结束后，应首先按下POWER键，待散热完成后，再关闭电源。 A. 正确 B. 错误答案：A
金融学期末考试试题
金融学期末考试试题
金融学期末考试试题 一、名词解释(每小题3分，共15) 1．资本与金融项目:反映的是资产所有权在国际间的流动，包括资本项目和金融项目。 2．贮藏手段:当货币由于种种原因而推出流通领域，被持有者当做独立的价值形态和社会财富的一般代表而保存起来。这时，货币就发挥着贮藏手段的职能。贮藏手段是在价值尺度和流通尺度的基础之上建立起来的。 3．证券交易所：是专门的、有组织的证券买卖集中交易的场所 4．出口信贷：出口信贷是出口国为支持和扩大本国产品的出口，提高产品的国际竞争能力，通过提供利息补贴和信贷担保的方式，鼓励本国银行向本国出口商或外国进口商提供的中长期信贷。 5．浮动利率：是指在整个借贷期限内，利率随市场利率的变化而定期调整的利率。 二、判断正确与错误(正确的打√，错误的打X。每小题1分，共10分。答对给分，答错扣分，不答不给分) 1．经济发展的商品化是货币化的前提与基础，但商品化不一定等于货币化。( √ ) 2．商业票据不能作为信用货币的形式。 (× ) 3．格雷欣法则是在金银平行本位制中发生作用的。 ( × ) 4．当市场利率上升时，证券行市也上升。 (× ) 5．中央银行独占货币发行权是中央银行区别于商业银行的根本标志。 ( √) 6．银行和保险业务收支在国际收支平衡表中属于资本项目。 (× ) 7．现金漏损与贷款余额之比称为现金漏损率，也称提现率。 ( × ) 8．物价上涨就是通货膨胀。 ( × ) 9．基准利率一般属于长期利率。 ( × ) 10．通知放款是商业银行之间的短期资金拆借。 (√) 三、单项选择题(每小题1分，共10分，每小题有一项答案正确，请将正确答案的序号填写在括号内) 1．中国第一家现代银行是( D ) A．汇丰银行 B．花旗银行
工程测量学试题库160题(附答案)..
工程测量学试题库（附答案） 1. ( D )处处与铅垂线垂直。 A.水平面 B.参考椭球面 C.铅垂面 D.大地水准面 2. 地球的长半径约为( A )千米。 A.6371 B.6400 C.6378 D.6356 3. 在测量直角坐标系中，纵轴为( C )。 A.x轴，向东为正 B.y轴，向东为正 C.x轴，向北为正 D.y轴，向北为正 4. 对高程测量，用水平面代替水准面的限度是( D )。 A. 在以10km为半径的范围内可以代替 B. 在以20km为半径的范围内可以代替 C. 不论多大距离都可代替 D. 不能代替 5. 在以( B )km为半径的范围内，可以用水平面代替水准面进行距离测量。 A.5 B.10 C.15 D.20 6. 在测量平面直角坐标系中,x轴表示什么方向？（C）。 A.东西 B.左右 C.南北 D.前后 7. 测定点的坐标的主要工作是( C )。 A．测量水平距离B．测量水平角 C．测量水平距离和水平角D．测量竖直角 8. 确定地面点的空间位置，就是确定该点的平面坐标和( A )。 A．高程B．方位角 C．已知坐标D．未知点坐标 9. 高斯投影属于( C )。 A．等面积投影B．等距离投影 C．等角投影D．等长度投影 10. 在测量直角坐标系中，横轴为( C )。 A. x轴，向东为正 B. x轴，向北为正 C. y轴，向东为正 D. y轴，向北为正 11. 在测量坐标系中，Y轴向（D）为正。 A、北 B、南 C、西 D、东 12. 假设的平均的静止海平面称为（D）。 A、基准面 B、水准面 C、水平面 D、大地水准面
13. ( B )的基准面是大地水准面。 A. 竖直角 B. 高程 C. 水平距离 D. 水平角 14. 建筑工程施工测量的基本工作是（B）。 A.测图 B.测设 C.用图 D.识图 15. 大地水准面处处与铅垂线（A）交。 A、正 B、平行 C、重合 D、斜 16. A、B两点，HA为115.032m，HB为114.729m，则hAB为（A）。 A、-0.303 B、0.303 C、29.761 D、-29.761 17. 建筑施工图中标注的某部位标高，一般都是指（B）。 A、绝对高程 B、相对高程 C、高差 18. 水在静止时的表面叫( B )。 A. 静水面 B. 水准面 C. 大地水准面 D. 水平面 19. ( B )的投影是大地水准面。 A. 竖直角 B. 高斯平面坐标 C. 水平距离 D. 水平角 20. 我国目前采用的高程基准是（D）。 A.高斯平面直角坐标 B.1980年国家大地坐标系 C.黄海高程系统 D.1985年国家高程基准 21. 地面上有一点A，任意取一个水准面，则点A到该水准面的铅垂距离为（D）。 A.绝对高程 B.海拔 C.高差 D.相对高程 22. 地面某点的经度为85°32′，该点应在三度带的第几带?( B ) 。 A．28 B．29 C．27 D．30 23. 在水准测量中，若后视点A读数小，前视点B读数大，则( D )。 A.A点比B点低 B.A、B可能同高 C.A、B的高程取决于仪器高度 D.A点比B点高 24. 水准测量中，设A为后视点，B为前视点，A尺读数为2.713m，B尺读数为1.401,已知A点高程为15.000m，则视线高程为( D )m。 A.13.688 B.16.312 C.16.401 D.17.713 25. 在水准测量中，若后视点A的读数大，前视点B的读数小，则有( A )。 A.A点比B点低 B.A点比B点高 C.A点与B点可能同高 D.A、B点的高低取决于仪器高度 26. 水准仪的分划值越大，说明( B )。 A. 圆弧半径大 B. 其灵敏度低 C. 气泡整平困难 D. 整平精度高 27. DS1水准仪的观测精度( A )DS3水准仪。
测试技术基础试题及答案1
北京工业大学２００7—2００8学年第二学期 测量技术基础试卷(开卷) 班级学号姓名成绩 一、填空题（２5分，每空1分) 1．时间常数τ是一阶传感器动态特性参数，时间常数τ越小，响应越快，响应曲线越接近于输入阶跃曲线。 2．满足测试装置不失真测试的频域条件是幅频特性为一常数和相频特性与频率成线性关系。３．电荷放大器常用做压电传感器的后续放大电路，该放大器的输出电压与传感器产生的电荷量成正比，与电缆引线所形成的分布电容无关。 4．信号当时间尺度在压缩时，则其频带变宽其幅值变小。 5.当测量较小应变值时,应选用电阻应变效应工作的应变片，而测量大应变值时，应选用压阻效应工作的应变片，后者应变片阻值的相对变化主要由材料电阻率的相对变化来决定。6．电感式和电容式传感器常采用差动方式，不仅可提高灵敏度,且能改善或消除非线性。7．电涡流传感器是利用金属材料的电涡流效应工作,可分为低频透射式和高频反射式两种，其中前者常用于材料厚度的测量。
8.在调制解调技术中，将控制高频振荡的低频信号称为 调制波 ,载送低频信号的高频振荡信号称为 载波 ,将经过调制过程所得的高频振荡波称为 已调制波 。 9．已知()t t x ωsin 12=,()t δ为单位脉冲函数,则积分()?∞ +∞-?? ? ?? -?dt t t x ωδ2π= 12 。 １０.已知霍尔式转速传感器的测速齿轮的齿数为20,若测得感应电动势的频率为3０0Hz ，则被测轴的转速为 900ｒ/min 。 1１. RC 低通滤波器中的ＲＣ值越大,则其上限截止频率越 小 。 1２． 频率混叠是由于 采样频率过低 引起的，泄漏则是由于 信号截断 所引起的。 二、选择题(１5分,每题1.5分) 1．离散、周期的时域信号频谱的特点是( C ）的。 A 非周期、离散? B 非周期、连续 C 、周期、离散 D 周期、连续 2．按传感器能量源分类，以下传感器不属于能量控制型的是( C )。 Ａ 电阻传感器? B 电感传感器 C 光电传感器 D 电容传感器 3．变磁通感应式传感器在测量轴的转速时，其齿盘应采用（ Ｂ )材料制成。 A 金属 Ｂ 导磁 C 塑料 Ｄ 导电 4.测试装置能检测输入信号的最小变化能力,称为（ D )。 A 精度 B 灵敏度 C 精密度 Ｄ 分辨力 ５.数字信号的特征是( B ）。 A 时间上离散，幅值上连续 B 时间、幅值上都离散 C 时间上连续,幅值上量化 ? D 时间、幅值上都连续
金融学期末考试试题
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( ) A ．单一银行制 B ．总分行制 C ．持股公司制 D ．连锁银行制 5．著名国际金融专家特里芬提出的确定一国储备量的指标是各国的外汇储备应大致相当—国 ( ) 个月的进口额 A ．三 B ．六 C ．九 D ．十 6．下列属于消费信用的是 ( ) A ．直接投资 B ．银团贷款 C ．赊销 D 。出口信贷 7．金本位制下， ( ) 是决定两国货币汇率的基础 A ．货币含金量 B ．铸币平价 C ．中心汇率 D ．货币实际购买力 8．专门向经济不发达会员国的私营企业提供贷款和投资的国际金融组织是 ( ) A ．国际开发协会 B ．国际金融公司 C ．国际货币基金组织 D 。国际清算银行 9．属于管理性金融机构的是 ( ) A ．商业银行 B ．中央银行 C ．专业银行 D ．投资银行 10．属于货币政策远期中介指标的是 ( ) A ．汇率 B ．超额准备金 C.利率 D .基础货币四、多项选择题 (每小题 2 分，共 20分，每小题有数目不等的答案正确，请将所有正确答案的序号填写在括号内 ) 1．商业银行在经营活动中可能面临的风险有 ( ) A ．信用风险 B 。资产负愤失衡风险 C ，来自公众信任的风险 D ．竞争的风险 E ．市场风险 2．按照外汇支付方式划分的汇率是 ( ) A ．卖出汇率 B ．买人汇率 C ．信汇汇率 D ．票汇汇率 E ．电汇汇率
工程测量考试题库(试题1)
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10.对某一边长观测四个测回，其结果分别为：123.041m、123.045m、123.040m、 123.038m，则其观测值中误差为（ C ）m。 C.±0.003 11.在一地面平坦，无经纬仪的建筑场地，放样点位应选用（ A ）方法。 A.直角坐标 12.坐标方位角是以（D ）为标准方向，顺时针转到测线的夹角。 D.指向正北的方向 13.水准仪的使用步骤为( A )。 A.粗平-- 照准-- 精平 -- 读数 14.在进行水准测量时，由A点向B点进行测量，测得AB两点之间的高差为0.698m， 且B点水准尺的读数为 2.376m，则A点水准尺的读数为( B )m。 B.3.074 15.竖直角的最大值为( A ) 。 A.90° 16.将经纬仪安置于A点且瞄准B点时，水平度盘读数为30°，欲测设45°的水平角值 于AB直线的左侧，则水平度盘的读数应为( A ) 。 A.345° 17.A、B的往测为213.41m，返测为213.35m ，其相对误差为（ B ）。 B.1/3500 18.在距离丈量中衡量精度的方法是用（ B ）。 B.相对误差 19.用角度交会法测设点的平面位置所需的数据是( C ) 。 C.两个角度 2
测试技术—考试题库及答案
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金融学1-15章测试题及其答案
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工程测试技术试题及答案
复习总结 一、概念题 1.测试过程中，若所测试的信号不随时间变化或变化非常缓慢，称这种测试称为静态测试。 如果所测试的信号随时间周期变化或变化很快，这种测试称为动态测试。 2.传感器是把被测量转换成易于变换、传输和处理的一种器件或装置。 3.按构成原理分类，电阻应变片、热敏电阻、压电晶片属物性型传感器。 4.按构成原理分类，电容传感器、自感型电感式传感器属结构型传感器。 5.为提高和改善传感器的技术性能，可采取以下技术措施：差动技术、平均技术以及补偿 与修正技术。 6.传感器的定度曲线（或标定曲线）与拟合直线之间的偏离程度称为传感器的线性度。 7.传感器的灵敏度是指稳态时，输出变化量与输入变化量之间的比值。 8.对于一阶传感器系统，当其时间常数（或τ）越小，其频率响应特性越好。 9.激波管标定系统中，激波管的作用是一种动态标定设备，能产生阶跃压力信号输出。 10.金属电阻应变片的规格一般以面积（或长×宽）和初始阻值表示。 11.用电阻应变片测量构件的变形，影响电阻应变片电阻变化的因素有：应变片的灵敏度和 初始阻值、被测构件的应变量、以及应变片沿构件的粘贴方向。（因为：△R=KεR，K 为灵敏度，R为应变片初始阻值，ε被测构件的应变量） 12.将电阻丝绕成应变片后，由于存在横向效应，其灵敏系数一般会减小。 13.在电桥测量中，由于电桥接法不同，输出电压的灵敏度也不同，全桥接法可以得到最大 灵敏度输出。 14.应变片的温度误差补偿方法通常可分为：桥路补偿法、应变片自补偿法。 15.根据工作原理，变气隙型自感式传感器的灵敏度具有理论上的非线性。 16.电涡流接近开关结构简单，根据其工作原理，不可用来进行类似如玻璃瓶、塑料零件以 及水的液位的检测。 17.在差动式自感传感器中，若采用交流桥路为变换电路，常出现零点残余电压现象，该现 象使传感器灵敏度下降，灵敏阈值增大，非线性误差增大。 18.差动变压器式位移传感器是将被测位移量的变化转换成线圈互感系数的变化，两个次级 线圈要求反向串接。 19.电容传感器的转换电路包括：交流电桥、变压器电桥、调频电路、运算放大器电路。 20.压电式传感器是一种可逆型传感器，即可将机械能转换为电能。也可反之实现逆向变换。 21.压电传感器中压电晶片的等效电路，可以看作是一个电荷源与一个电容器的并联。 22.压电传感器测量电路常接电压或电荷放大器。其中若传感器输出接电荷放大器，则其输 出基本不受连接电缆长度的影响。 23.压电式传感器的测量电路中，前置放大器的作用是阻抗变换和信号放大。 24.目前，用压电陶瓷制作的力传感器一般不能用于测量静态力，而只能用来测量动态力。 25.热电偶热电动势的形成是由于接触电动势和温差电动势共同作用的结果。 26.若组成热电偶的两导体材料相同，当参比端温度为20℃、工作端温度为100℃时，则其
在线测试题试题库及解答第十章结构动力学
在线测试题试题库及解答 第十章结构动力学基础 一、单项选择题 1、结构的主振型与什么有关？ A、质量和刚度 B、荷载C初始位移D、初始速度标准答案A 2、结构的自振频率与什么有关？ A、质量和刚度 B、荷载C初始位移D、初始速度标准答案A 3、单自由度体系在简谐荷载作用下，下列哪种情况内力与位移的动力系数相同？ A、均布荷载作用 B、荷载作用在质点上与质点运动方向垂直 C、荷载不作用在质点上 D、惯性力与运动方向共线 标准答案 D 4、具有集中质量的体系，其动力计算自由度 A、等于其集中质量数 B、小于其集中质量数 C、大于其集中质量数 D、以上都有可能 标准答案 D 5、具有集中质量的体系，其动力计算自由度 A、等于其集中质量数 B、小于其集中质量数 C、大于其集中质量数 D、以上都有可能 标准答案 D 6、当简谐荷载作用于有阻尼的单自由度体系质点上时，若荷载频率远远大 于体系的自振频率时，则此时与动荷载相平衡的主要是
A、弹性恢复力 B、重力C阻尼力D、惯性力 标准答案 D 7、设3为结构的自振频率，B为荷载频率，B为动力系数下列论述正确的是 A、3越大B也越大 B、0 /越大B也越大 C、0越大B也越大 D、0/ 3越接近1, B绝对值越大标准答案 D 8、如果体系的阻尼增大，下列论述错误的是 A、自由振动的振幅衰减速度加快 B、自振周期减小 C、动力系数减小 D、位移和简谐荷载的相位差变大 标准答案 B 9、无阻尼单自由度体系在简谐荷载作用下，共振时与动荷载相平衡的是 A、弹性恢复力 B、惯性力 C、惯性力与弹性力的合力 D、没有力 标准答案 D 10、有阻尼单自由度体系在简谐荷载作用下，共振时与动荷载相平衡的是 A、弹性恢复力 B、惯性力与弹性力的合力 C、惯性力 D、阻尼力 标准答案 D 11、当简谐荷载作用于无阻尼的单自由度体系质点上时，若荷载频率远远小于体系的自振频率时，则此时与动荷载相平衡的主要是 A、弹性恢复力 B、阻尼力 C、惯性力 D、重力
(完整版)金融学试题A卷
国际商学院2010-2011学年度第二学期《金融学》期 末考试试卷(A) 试作弊不授予学士学位。” 姓名学号专业成绩 Single Choice Questions(2 points per question, 12 point maximum) https://www.360docs.net/doc/5013036050.html,pany X has a beta of 1.5. The risk-free interest rate is 6% per annum; and the expected market premium is 10% per annum. What is Company X’s cost of equity? A: 9%; B: 12%; C: 15%; D: 21%. 2.If the intrinsic value of a share of common stock is more than its market value, which of the followings is the most reasonable conclusion? A: The stock has a low level of risk B: The stock offers a high dividend payout ratio. C: The market is undervaluing the stock. D: The market value is always more than the intrinsic value. 3.Which of the following statements on efficient market hypothesis is true: A: If a market is weak-form efficient, it must be semi-strong form efficient. B: If a market is semi-strong-form efficient, it must be weak-form efficient. C: If a market is strong-form inefficient, it must be semi-strong-form inefficient D: If a market is strong-form efficient, it could be semi-strong-form inefficient. 4.Which of the followings is a way of avoiding losses through hedging? A: Purchase a put option on a stock you do own. B: Lease a car with the option to purchase it in three years. C: Enter into a swap contract to exchange fixed exchange interest payments for floating-rate payment because you have floating-rate assets.
工程测试期末考试题库
计算分析题（总计30分） 1、由RC 组成无源低通滤波器，已知R=500(Ω)，C=10(μF)，试求： (1)截止频率f 0，并画出该滤波器的幅频示意图。 (2)设输入信号x(t)=0.2cos 12564.t -? ? ?? ?π,判断其是否在该滤波器的通频带内。 .(1)f 0= 121 250010103186 ππRC HZ =???=-.()（3分） 幅频示意图：（2分） (2)周期信号x(t)的角频率ω=125.6（2分） f 1=ωππ 212562200==<.()HZ f 信号x(t)的频率在该滤波器的通频带内。(3分) 2、已知电阻应变仪交流电桥的电桥电源 0()cos 2y t f t π=和输入信号x(t)的幅值谱如图所 示。电桥输出信号经相敏检波、低通滤波后输出。试分别画出电桥输出信号、相敏检波输出信号和低通滤波器输出信号幅值谱X m (f)、 X e (f)、 X f (f)。（１０分） 2．答： (1) 电桥输出信号（4分） （2）相敏检波输出信号（3分）
（3）低通滤波器（3分） 3、若用光线示波器来记录图一所示的方波信号，可否选用FC6-400型振动子? 并说明理由。(注：该振动子的固有频率为400Hz)（10分） 3. 答：不能选用（4分）。因该方波信号是一个由多频率成分叠加而成的复杂周期信号，周期为5ms ，则其基频为：Hz f 200005.0/10==，要较完整地记录该信号，必须保证其前十次谐波的幅值误差小于5％，即需满足： 58.010 200100≤?=?n n f f f ，得Hz f n 3448≥。而FC6-400型振动子的固有频率Hz f n 400=，远小于要求的3448Hz ，仅仅只有构成该方 波的一次谐波(200Hz)可以满足不失真的记录要求，其余各次谐波记录时都会产生很大的幅值误差，故不能选用FC6-400型振动子来进行记录。（6分） 4、某信号的时域表达式如下: t A t A A t x 002sin 2sin 2)(ωπωπ--= , 问: (1) 该信号属于哪类信号(周期或非周期)? (2分) (2) 当该信号通过一理想恒带宽带通滤波器，该滤波器的A(ω)=1，带宽B=80Hz ，中心频率f 0=50Hz,画出该滤波器输出波形的幅频谱(4分)并求出滤波器输出波形的平均值为多少(已知该信号基频f 0=50Hz ) (4分)?
测试技术题库(C)答案
１ ‘一、判断题（本大题共10小题，每题1分，共10分。请将答案填写 在下表中，正确的画“○” ，错误的打“×” ） 1 .二阶装置的固有频率ωn 表征装置惯性的大小，其值将直接影响其响应速度的快慢。 2. 可以明确的用数学关系式描述的信号称为确定性信号。 3. 一线性系统不满足“不失真测试”条件，若用它传输一个1000HZ 的正弦信号，则必然导致输出波形失真。 4. 有限个周期信号必形成新的周期信号。 5. 确定了幅值和频率就可以确定一个谐波信号。 6.变极距型电容或电感传感器，只要满足δ0》△δ的条件，则灵敏度均可视为常数。 7. 在热电偶中接入另一个等温的导体，其热电势不变。 8.用差动变压器式电感器作位移测量时，根据其输出电压的正负极性就能直接辨别出被测位移的方向。 9.压电片并联时，传感器的电容量大，输出电荷小。 10.物性型传感器是利用敏感器件材料本身物理性质的变化来实现信号检测的。 二、选择题（本大题共10小题，每题2分，共20分。请将答案填写在下表中） 1.测试装置能感知的输入变化量越小，表示测试装置的_______。 A ．线性度越好 B ．迟滞越小 C ．重复性越好 D ．分辨力越高 2.用常系数微分方程描述的系统为 ________ 系统。 A 相似 B 物理 C 力学 D 线性 3.无论二阶装置的阻尼比ζ如何变化，当它所受的激振力频率等于装置固有频率 时，该装置的输出与激振力之间的相位差必为 A.0? B.90? C.180? D.090??~之间反复变化的值 4．δ(t)函数的频谱是______ A 有限离散频谱 B 有限连续频谱 C 无限离散频谱 D 无限连续频谱 5. 若测试系统由两个环节并联而成，且两环节的传递函数分别为H 1(S) 和 H 2(S)，则该系统的总传递函数为________。 A.H 1(s)+H 2(s) B. H 1(s)H 2(s) C. H 1(s)–H 2(s) D. H 1(s)/H 2(s) 6.灵敏度始终为常数的传感器是_________。 A.电容式传感器 B.电感式传感器 C.电阻应变片 D.热敏电阻 7.在光电作用下，使物体的内部产生定向电动势的现象称_________效应。 A ． 内光电 B 外光电 C 热 电 D 阻挡层光电 8. 若热电偶的两电极材料相同，且两结点温度不同，则热电偶 为零。 A 仅有接触电势 B 总的热电势为零 C 仅有单一导体的温差电势 D 接触电势和温差电势均不为零 9.描述非周期信号的数学工具是______。 A .相关系数 B .傅立叶级数 C .拉氏变换 D .傅立叶变换 10.将信号在时域进行时移，则在频域中信号将会___ ___。 A ．不变 B ．扩散 C ．压缩 D ．仅有相移 11.欲进行旋转齿轮的转速测量，宜选用________传感器。 A .压电式 B .磁电式 C .电阻式 D .热电式 12.半导体应变片具有________等优点。 A.灵敏度高 B.温度稳定性好 C.可靠性高 D.接口电路复杂 1.测试装置能感知的输入变化量越小，表示测试装置的_______。 A ．线性度越好 B ．迟滞越小 C ．重复性越好 D ．分辨力越高 4.非线性度是描述标定曲线 的程度。 A .接近真值 B .偏离拟合直线 C .正反行程不重合 D .重复性
数据库在线测试试题
数据库在线测试试题 选择题 1.下述（C）不是DBA数据库管理员的职责 完整性约束说明 定义数据库模式 数据库管理系统设计 数据库安全 2.用户或应用程序看到的那部分局部逻辑结构和特征的描述是（A ），它是模式的逻辑子集 子模式 模式 内模式 物理模式 3.要保证数据库的逻辑数据独立性，需要修改的是( C ) 模式与内模式之间的映射 模式 模式与外模式的映射 三层模式 4.要保证数据库的数据独立性，需要修改的是( A ) 三层之间的两种映射 模式与外模式
模式与内模式 三层模式 5.描述数据库全体数据的全局逻辑结构和特性的是( B ) 外模式 模式 内模式 用户模式 6.数据库系统的数据独立性体现在( B ) 不会因为数据的变化而影响到应用程序 不会因为系统数据存储结构与数据逻辑结构的变化而影响应用程序 不会因为某些存储结构的变化而影响其他的存储结构 不会因为存储策略的变化而影响存储结构 7.下列四项中，不属于数据库系统特点的是( B ) 数据共享 数据冗余度高 数据完整性 数据独立性高 8.下面列出的数据库管理技术发展的三个阶段中，没有专门的软件对数据进行管理的是（D ）。I．人工管理阶段II．文件系统阶段III．数据库阶段 I 和II 只有II
II 和III 只有I 9.DBS是采用了数据库技术的计算机系统，它是一个集合体，包含数据库、计算机硬件、 软件和（D ） 系统分析员 程序员 操作员 数据库管理员 10.数据库（DB），数据库系统（DBS）和数据库管理系统（DBMS）之间的关系是（C ）。 DBMS包括DB和DBS DBS就是DB，也就是DBMS DBS包括DB和DBMS DB包括DBS和DBMS 2填空题 1.数据库是长期存储在计算机内有组织、可共享、的数据集合。 2.DBMS是指（数据库管理系统）,它是位于（用户）,和（操作系统）, 之间的一层管理软件 3.数据库管理系统的主要功能有, 数据定义, 数据操纵,数据库运行管理，数据库的建立维护维护等4个方面 4.数据独立性又可分为（逻辑独立性）和（物理独立性）
工程测试考试题有答案
试题 1、求传递函数为H(S)= 5 1001+.S 的系统对正弦输入x(t)=10sin(62.8t)的稳态响应y(t),并求 出幅值误差和相位误差。 答：由频率保持性知 y(t)=10|H(ω)|sin(62.8t+φ(ω)) 且 ｜H(ω)｜= S 1510016284232 2 += +?=() (..) .τω φ(w)=-arctg(τω)=-tg -1(0.01×62.8)=-32° ∴y(t)=42.3sin(62.8t-32°) ∴幅值误差为5×10-42.3=7.7，相位误差为32° 2、实现不失真测试的条件是什么?分别叙述一、二阶装置满足什么条件才能基本上保证不失真测试。 答：.测试装置实现不失真测试的条件是 A(ω)=A 0=常数 φ(ω)=-t 0ω 为能满足上述条件，对于一阶装置，时间常数τ原则上越小越好，对于二阶装置一般选取ξ=0.6～0.8，ω=0～0.58ωn 。 3、用一阶量仪作100Hz 正弦信号的测量，如要限制振幅误差在5%以内，则该量仪的时间常数τ应设计成多大？ 答：一阶量仪的频率响应函数①,j 11 )j (H τω += ω②幅频特性2)(1/1)(H τω+=ω， ③欲误差小于5%，)(H ω应大于0.95,已知π=π=ω200f 2 ④故: 2 )200(1/1πτ+应大于0.95,⑤解得:000523.0<τ 4、某光线示波器的振动子输入i(t)为单位阶跃，输出θ()t 如下图所示的衰减振动，试根据图中数据确定该振动子的固有频率ωn 及阻尼比ζ。 答：①由图可见衰减振动的周期为6.28ms=3 1028.6-?s 即衰减振动的频率28 .61000 f d = ，相应s /r 1000f 2d d =π=ω ②阻尼比ζ与振幅衰减的关系为2 211/2M M ln ζ-πζ=，图中注明π=2M M ln 2 1