CHAPTER 2
FOUNDATIONS OF MODERN TRADE THEORY MULTIPLE-CHOICE QUESTIONS
1. The mercantilists would have objected to:
a. Export promotion policies initiated by the government
b. The use of tariffs or quotas to restrict imports
c. Trade policies designed to accumulate gold and other precious metals
d. International trade based on open markets
2. Unlike the mercantilists, Adam Smith maintained that:
a. Trade benefits one nation only at the expense of another nation
b. Government control of trade leads to maximum economic welfare
c. All nations can gain from free international trade
d. The world’s output of goods must remain constant over time
3. The trading principle formulated by Adam Smith maintained that:
a. International prices are determined from the demand side of the market
b. Differences in resource endowments determine comparative advantage
c. Differences in income levels govern world trade patterns
d. Absolute cost differences determine the immediate basis for trade
4. Unlike Adam Smith, David Ricardo’s trading principle emphasizes the:
a. Demand side of the market
b. Supply side of the market
c. Role of comparative costs
d. Role of absolute costs
5. When a nation requires fewer resources than another nation to produce a product, the nation is said to have
a (an):
a. Absolute advantage in the production of the product
b. Comparative advantage in the production of the product
c. Lower marginal rate of transformation for the product
d. Lower opportunity cost of producing the product
6. According to the principle of comparative advantage, specialization and trade increase a nation’s total
output since:
a. Resources are directed to their highest productivity
b. The output of the nation’s trading partner declines
c. The nation can produce outside of its production possibilities curve
d. The problem of unemployment is eliminated
7. In a two-product, two-country world, international trade can lead to increases in:
a. Consumer welfare only if output of both products is increased
b. Output of both products and consumer welfare in both countries
c. Total production of both products, but not consumer welfare in both countries
d. Consumer welfare in both countries, but not total production of both products
8. As a result of international trade, specialization in production tends to be:
a. Complete with constant costs—complete with increasing costs
b. Complete with constant costs—incomplete with increasing costs
c. Incomplete with constant costs—complete with increasing costs
d. Incomplete with constant costs—incomplete with increasing costs
9. A nation that gains from trade will find its consumption point being located:
a. Inside its production possibilities curve
b. Along its production possibilities curve
c. Outside its production possibilities curve
d. None of the above
Using the data of Table 2.1, answer Questions 10 through 15.
Table 2.1. Output Possibilities for the U.S. and the U.K.
Output per Worker per Day
Country Tons of Steel Televisions
United States 15 45
United Kingdom 10 20
10. Refer to Table 2.1. The United States has the absolute advantage in the production of:
a. Steel
b. Televisions
c. Both steel and televisions
d. Neither steel nor televisions
11. Refer to Table 2.1. The United Kingdom has a comparative advantage in the production of:
a. Steel
b. Televisions
c. Both steel and televisions
d. Neither steel nor televisions
12. Refer to Table 2.1. If trade opens up between the United States and the United Kingdom, American firms
should specialize in producing:
a. Steel
b. Televisions
c. Both steel and televisions
d. Neither steel nor televisions
13. Refer to Table 2.1. The opportunity cost of producing one ton of steel in the United States is:
televisions
a. 3
televisions
b. 10
televisions
c. 20
televisions
d. 45
14. Refer to Table 2.1. Mutually advantageous trade will occur between the United States and the United
Kingdom so long as one ton of steel trades for:
a. At least 1 television, but no more than 2 televisions
b. At least 2 televisions, but no more than 3 televisions
c. At least 3 televisions, but no more than 4 televisions
d. At least 4 televisions, but no more than 5 televisions
15. Refer to Table 2.1. The United Kingdom gains most from trade if:
a. 1 ton of steel trades for 2 televisions
b. 1 ton of steel trades for 3 televisions
c. 2 tons of steel trade for 4 televisions
d. 2 tons of steel trade for 5 televisions
16. Concerning international trade restrictions, which of the following is false? Trade restrictions:
a. Limit specialization and the division of labor
b. Reduce the volume of trade and the gains from trade
c. Cause nations to produce inside their production possibilities curves
d. May result in a country producing some of the product of its comparative disadvantage
17. If a production possibilities curve is bowed out (i.e., concave) in appearance, production occurs under
conditions of:
a. Constant opportunity costs
b. Increasing
costs
opportunity
opportunity costs
c. Decreasing
d. Zero opportunity costs
18. Increasing opportunity costs suggest that:
a. Resources are not perfectly shiftable between the production of two goods
b. Resources are fully shiftable between the production of two goods
c. A country’s production possibilities curve appears as a straight line
d. A country’s production possibilities curve is bowed inward (i.
e., convex) in appearance
19. The trading-triangle concept is used to indicate a nation’s:
a. Exports, marginal rate of transformation, terms of trade
b. Imports, terms of trade, marginal rate of transformation
c. Marginal rate of transformation, imports, exports
d. Terms of trade, exports, imports
20. Assuming increasing cost conditions, trade between two countries would not be likely if they have:
a. Identical demand conditions but different supply conditions
b. Identical supply conditions but different demand conditions
c. Different supply conditions and different demand conditions
d. Identical demand conditions and identical supply conditions
Use the data in Table 2.2 to answer Questions 21 through 26.
Table 2.2. Output Possibilities for South Korea and Japan
Output per Worker per Day
Country Tons of Steel VCRs
South Korea 80 40
Japan 20 20
21. Refer to Table 2.2. The opportunity cost of one VCR in Japan is:
a. 1 ton of steel
b. 2 tons of steel
c. 3 tons of steel
d. 4 tons of steel
22. Refer to Table 2.2. The opportunity cost of one VCR in South Korea is:
a. ? ton of steel
b. 1 ton of steel
c. 1? tons of steel
d. 2 tons of steel
23. Refer to Table 2.2. According to the principle of absolute advantage, Japan should:
steel
a. Export
VCRs
b. Export
c. Export steel and VCRs
d. None of the above; there is no basis for gainful trade
24. Refer to Table 2.2. According to the principle of comparative advantage:
a. South Korea should export steel
b. South Korea should export steel and VCRs
c. Japan should export steel
d. Japan should export steel and VCRs
25. Refer to Table 2.2. With international trade, what would be the maximum amount of steel that South Korea
would be willing to export to Japan in exchange for each VCR?
a. ? ton of steel
b. 1 ton of steel
c. 1? tons of steel
d. 2 tons of steel
26. Refer to Table 2.2. With international trade, what would be the maximum number of VCRs that Japan
would be willing to export to South Korea in exchange for each ton of steel?
VCR
a. 1
VCRs
b. 2
VCRs
c. 3
VCRs
d. 4
27. The earliest statement of the principle of comparative advantage is associated with:
a. Adam
Smith
Ricardo
b. David
Heckscher
c. Eli
Ohlin
d. Bertil
28. If Hong Kong and Taiwan had identical labor costs but were subject to increasing costs of production:
a. Trade would depend on differences in demand conditions
b. Trade would depend on economies of large-scale production
c. Trade would depend on the use of different currencies
d. There would be no basis for gainful trade
29. If the international terms of trade settle at a level that is between each country’s opportunity cost:
a. There is no basis for gainful trade for either country
b. Both countries gain from trade
c. Only one country gains from trade
d. One country gains and the other country loses from trade
30. International trade is based on the notion that:
a. Different currencies are an obstacle to international trade
b. Goods are more mobile internationally than are resources
c. Resources are more mobile internationally than are goods
d. A country’s exports should always exceed its imports
31. Refer to Figure 2.1. The relative cost of steel in terms of aluminum is:
tons
a. 4.0
tons
b. 2.0
tons
c. 0.5
tons
d. 0.25
Figure 2.1. Production Possibilities Schedule
32. Refer to Figure 2.1. The relative cost of aluminum in terms of steel is:
tons
a. 4.0
b. 2.0
tons
tons
c. 0.5
tons
d. 0.25
33. Refer to Figure 2.1. If the relative cost of steel were to rise, then the production possibilities schedule
would:
steeper
a. Become
flatter
b. Become
c. Shift inward in a parallel manner
d. Shift outward in a parallel manner
34. Refer to Figure 2.1. If the relative cost of aluminum were to rise, then the production possibilities schedule
would:
steeper
a. Become
flatter
b. Become
c. Shift inward in a parallel manner
d. Shift outward in a parallel manner
35. When a nation achieves autarky equilibrium:
a. Input price equals final product price
b. Labor productivity equals the wage rate
exports
equal
c. Imports
d. Production equals consumption
36. When a nation is in autarky and maximizes its living standard, its consumption and production points are:
a. Along the production possibilities schedule
b. Above the production possibilities schedule
c. Beneath the production possibilities schedule
d. Any of the above
37. If Canada experiences increasing opportunity costs, its supply schedule of steel will be:
a. Downward-sloping
b. Upward-sloping
c. Horizontal
d. Vertical
38. If Canada experiences constant opportunity costs, its supply schedule of steel will be:
a. Downward-sloping
b. Upward-sloping
c. Horizontal
d. Vertical
39. The gains from international trade increase as:
a. A nation consumes inside of its production possibilities schedule
b. A nation consumes along its production possibilities schedule
c. The international terms of trade rises above the nation’s autarky price
d. The international terms of trade approaches the nation’s autarky price
40. In a two-country, two-product world, the statement “Japan enjoys a comparative advantage over France in
steel relative to bicycles” is equivalent to:
a. France having a comparative advantage over Japan in bicycles relative to steel
b. France having a comparative disadvantage against Japan in bicycles and steel
c. Japan having a comparative advantage over France in steel and bicycles
d. Japan having a comparative disadvantage against Japan in bicycles and steel
41. Ricardo’s theory of comparative advantage was of limited real-world validity because it was founded on
the:
a. Labor theory of value
b. Capital theory of value
c. Land theory of value
d. Entrepreneur theory of value
42. Assume that labor is the only factor of production and that wages in the United States equal $20 per hour
while wages in the United Kingdom equal $10 per hour. Production costs would be lower in the United States than the United Kingdom if:
a. U.S. labor productivity equaled 40 units per hour while U.K. labor productivity equaled 15 units per
hour
b. U.S. labor productivity equaled 30 units per hour while U.K. labor productivity equaled 20 units per
hour
c. U.S. labor productivity equaled 20 units per hour while U.K. labor productivity equaled 30 units per
hour
d. U.S. labor productivity equaled 15 units per hour while U.K. labor productivity equaled 25 units per
hour
43. According to Ricardo, a country will have a comparative advantage in the product in which its:
a. Labor productivity is relatively low
b. Labor productivity is relatively high
c. Labor mobility is relatively low
d. Labor mobility is relatively high
44. The Ricardian model of comparative advantage is based on all of the following assumptions except:
a. Only two nations and two products
b. Product quality varies among nations
c. Labor is the only factor of production
d. Labor can move freely within a nation
45. The writings of G. D. A. MacDougall emphasized which of the following as an explanation of a country’s
competitive position?
a. National income levels
b. Relative endowments of natural resources
c. Domestic tastes and preferences
d. Labor compensation and productivity levels
TRUE-FALSE QUESTIONS
T F 1. According to the mercantilists, a nation’s welfare would improve if it maintained a surplus of exports over imports.
T F 2. The mercantilists maintained that a free-trade policy best enhances a nation’s welfare.
T F 3. The mercantilists contended that because one nation’s gains from trade come the expense of its trading partners, not all nations could simultaneously realize gains from trade.
T F 4. According to the price-specie-flow doctrine, a trade-surplus nation would experience gold outflows, a decrease in its money supply, and a fall in its price level.
T F 5. The trade theories of Adam Smith and David Ricardo viewed the determination of
competitiveness from the demand side of the market.
T F 6. According to the principle of absolute advantage, international trade is beneficial to the world if one nation has an absolute cost advantage in the production of one good while the other nation
has an absolute cost advantage in the other good.
T F 7. The principle of absolute advantage asserts that mutually beneficial trade can occur even if one nation is absolutely more efficient in the production of all goods.
T F 8. The basis for trade is explained by the principle of absolute advantage according to David Ricardo and the principle of comparative advantage according to Adam Smith.
T F 9. The principle of comparative advantage contends that a nation should specialize in and export the good in which its absolute advantage is smallest or its absolute disadvantage is greatest.
T F 10. The Ricardian theory of comparative advantage assumes only two nations and two products, labor can move freely within a nation, and perfect competition exists in all markets.
T F 11. Assume that the United States is more efficient than the United Kingdom in the production of all goods. Mutually beneficial trade is possible according to the principle of absolute advantage,
but is impossible according to the principle of comparative advantage.
T F 12. It is possible for a nation not to have an absolute advantage in anything; but it is not possible for one nation to have a comparative advantage in everything and the other nation to have a
comparative advantage in nothing.
T F 13. Ricardo’s theory of comparative advantage was of limited relevance to the real world since it assumed that labor was only one of several factors of production.
T F 14. Compared to Ricardian trade theory, modern trade theory provides a more general view of comparative advantage since it is based on all factors of production rather than just labor.
T F 15. Constant opportunity costs suggest that the relative cost of producing one product in terms of the other will remain the same no matter where a nation chooses to locate on its
production-possibilities schedule.
T F 16. There are two explanations of constant opportunity costs: (1) factors of production are imperfect substitutes for each other; (2) all units of a given factor have different qualities.
T F 17. With increasing opportunity costs, a nation totally specializes in the production of the
commodity of its comparative advantage; with constant opportunity costs, a nation partially
specializes in the production of the commodity of its comparative advantage.
T F 18. A nation’s trade triangle denotes its exports, imports, and terms of trade.
T F 19. International trade leads to increased welfare if a nation can achieve a post-trade consumption point lying inside of its production-possibilities schedule.
T F 20. If the U.S. post-trade consumption point lies along its production possibilities schedule, the United States achieves a higher level of welfare with trade than without trade.
T F 21. If productivity in the German computer industry grows faster than it does in the Japanese computer industry, the opportunity cost of each computer produced in Japan increases relative
to the opportunity cost of a computer produced in Germany.
T F 22. If Japan loses competitiveness in computers, Japanese computer workers lose jobs to foreign computer workers and the wages of Japanese computer workers tend to fall relative to the
wages of foreign computer workers.
T F 23. With constant opportunity costs, a nation will achieve the greatest possible gains from trade if it partially specializes in the production of the commodity of its comparative disadvantage.
T F 24. By reducing the overall volume of trade, import restrictions tend to reduce a nation’s gains from trade.
T F 25. With increasing opportunity costs, comparative advantage depends on a nation’s supply conditions and demand conditions; with constant opportunity costs, comparative advantage
depends only on demand conditions.
T F 26. According to the principle of comparative advantage, an open trading system results in resources being channeled from uses of low productivity to those of high productivity.
T F 27. The existence of exit barriers tends to delay the closing of inefficient firms that face
international competitive disadvantages.
T F 28. MacDougall’s empirical study of comparative advantage was based on the notion that a product’s labor cost is underlaid by labor productivity and the wage rate.
T F 29. The MacDougall study of comparative advantage hypothesized that in those industries in which U.S. labor productivity was relatively high, U.S. exports to the world should be lower than U.K.
exports to the world, after adjusting for wage differentials.
T F 30. The basic idea of mercantilism was that wealth consisted of the goods and services produced by
a nation.
T F 31. According to Adam Smith, international trade was a “win-win” situation since all nations could enjoy gains from trade.
T F 32. The price-specie-flow mechanism illustrated why one nation’s gains from trade were
accompanied by another country’s losses.
T F 33. Complete specialization usually occurs under the assumption of increasing opportunity costs.
T F 34. Adam Smith contended that gold, silver, and other precious metals constituted the wealth of a nation.
T F 35. The price-specie-flow mechanism illustrated why nations could not maintain trade surpluses or trade deficits over the long run.
T F 36. The marginal rate of transformation equals the absolute slope of a country’s production possibilities schedule.
T F 37. Assume that Germany has higher labor productivity and higher wage levels than France.
Germany can produce a commodity more cheaply than France if its productivity differential
more than offsets its wage differential.
T F 38. Ricardo’s theory of comparative advantage does not take into account demand conditions when determining relative commodity prices.
T F 39. If Canada has a higher wage level and higher labor productivity than Mexico, Canada will necessarily produce a good at a higher labor cost than Mexico.
T F 40. If Argentina has a comparative advantage over Brazil in beef relative to coffee, Argentina will specialize in beef production.
TERMS EXPLANATION
1.Increasing opportunity costs
2.Marginal rate of substitution (MRT)
https://www.doczj.com/doc/798728465.html,munity indifference curve
4.Marginal rate of substitution (MRS)
5.Autarky
6.Equilibrium-relative commodity price in isolation
7.Revealed comparative advantage
8.Equilibrium-relative commodity price with trade
9.Incomplete specialization
10.Gains from exchange
11.Gains from specialization
12.Deindustrialization
ANSWER QUESTIONS
1.On one set of axes, sketch a fairly large production frontier concave from the origin.
a)Starting near the midpoint on the production frontier, use arrows to show that the nation incurs
increasing opportunity costs in producing more of X (the commodity measured along the horizontal axis) and more of Y.
b)How does the slope of the production frontier change as the nation produces more of X? more of
Y ? What do these changes reflect?
2.On another set of axes, sketch three community indifference curves, making the top two curves cross
each other.
a)Why have you drawn community indifference curves downward, or negatively, sloped?
b)What does the slope of the curves measure? Why is the slope of each curve smaller for lower
points?
c)Which of the two intersecting indifference curves shows a greater level of satisfaction on the right
of the point of intersection? to the left? Why is this inconsistent with the definition of indifference curves? What conclusion can you reach?
3.On two sets of axes, draw identical concave production frontiers with different community indifference
curves tangent to them.
a)Indicate the autarky equilibrium-relative commodity price in each nation.
b)Show the process of specialization in production and mutually beneficial trade.
4.What would have happened if the two community indifference curves had also been identical in
Problem 5? Sketch a graph of this situation.
5.What would happen if the production frontiers are identical and the community indifference curves are
different, but we have constant opportunity costs? Draw a graph of this.
6.During the negotiations for NAFTA (North American Free Trade Agreement among the United States,
Canada, and Mexico) in the early 1990s, opponents argued that the United States would lose many jobs to Mexico because of the much lower wages in Mexico. What was wrong with this line of reasoning? 7.Can specialization in production and mutually beneficial trade be based solely on a difference in tastes
between two nations? How is this different from the more general case?
8.Identify the basic questions with which modern trade theory is concerned.
9. How did Smith’s views on international trade differ from those of the mercantilists?
10 Develop an arithmetic example that illustrates how a nation could have an absolute disadvantage in the production of two goods and could still have a comparative advantage in the production of one of them. 11.Both Smith and Ricardo contended that the pattern of world trade is determined solely by supply conditions. Explain.
12.How does the comparative-cost concept relate to a nation’s production possibilities schedule? Illustrate how differently shaped production possibilities schedules give rise to different opportunity costs.
13.What is meant by constant opportunity costs and increasing opportunity cost? Under what conditions will a country experience constant or increasing costs?
14.Why is it that pretrade production points have a bearing on comparative costs under increasing-cost conditions but not under conditions of constant cost?
15.What factors underbellies whether specialization in production will be partial or complete on an international basis?
16.The gains from specialization and trade are discussed in terms of production gains and consumption gains. What do these terms mean?
17.What is meant by the term trade triangle?
18.With a given level of world resources, international trade may bring about an increasing total world output. Explain.
19.ANSWERS
ANSWERS TO MULTIPLE-CHOICE QUESTIONS
1. d
2. c
3. d
4. c
5. a
6. a
7. b
8. b
9. c
10. c
11. a
12. b
13. a
14. b
15. b
16. c
17. b
18. a
19. d
20. d
21. a
22. d
23. d
24. a
25. d
26. a
27. b
28. a
29. b
30. b
31. c
32. b
33. a
34. b
35. d
36. a
37. b
38. c
39. c
40. a
41. a
42. a
43. b
44. b
45. d
ANSWERS TO TRUE-FALSE QUESTIONS
1. T
2. F
3. T
4. F
5. F
6. T
7. F
8. F
9. F
10. T
11. F
12. F
13. F
14. T
15. T
16. F
17. F
18. T
19. F
20. F
21. T
22. T
23. F
24. T
25. F
26. T
27. T
28. T
29. F 30. F
31. T
32. F
33. F
34. F
35. T
36. T
37. T
38. T
39. F
40. T
ANSWERS TO TERM EXPLANATION
1.Increasing opportunity costs：When the homeland increases the production of those goods that have
comparative advantage, the marginal costs will equal to marginal revenue before the predominant industry doesn’t realize full specialty in the homeland. Thereby, the production in the homeland can’t reach the full specialization.
2.Marginal rate of substitution (MRT):keep the production equal, the technology ratio that use one production
factor to substitute the other production factor.
https://www.doczj.com/doc/798728465.html,munity indifference curve: which show the various combinations of two goods that give a consumer the
same total level of satisfaction.
4.Marginal rate of substitution (MRS): keep the utility equal, the amount of Y goods that people must give up
when he increases the consumption of x goods.
5.Autarky: A kind of independent policy that rely on their own factors to produce goods and then consume.
6.Equilibrium-relative commodity price in isolation: the price when the supply equals to demand inside the
nation.
7.Revealed comparative advantage: the specific resources and advantage in the international trade.
8.Equilibrium-relative commodity price with trade: the price when the supply equals to demand in the trade.
9.Incomplete specialization: The transfer of factors of production between different departments will cause
the change of corresponding production efficiency, which leads to the incomplete specialization internationally.
10.Gains from exchange: including the saving of factors of production and the improvements of people’s
welfare etc.
11.Gains from specialization: the improvement of production efficiency.
12.Deindustrialization: the form to restrict the development of international trade.
ANSWERS TO QUESTIONS
1-5: omit.
6: Different country has different comparative advantages.
7: it should be based on the comparative advantage.
no,
8:Mercantilism: Regulation to ensure a positive trade balance.Critics: possible only for short term; assumes static world economy.David Hume’s Price-Specie-Flow Doctrine
Absolute advantage (Adam Smith)
Countries benefit from exporting what they make cheaper than anyone else
But: nations without absolute advantage do not gain from trade
Comparative advantage (David Ricardo)
Nations can gain from specialization, even if they lack an absolute advantage
9:Absolute advantage (Adam Smith)
Countries benefit from exporting what they make cheaper than anyone else
But: nations without absolute advantage do not gain from trade
10:omit.
11: supply conditions can determine the comparative advantage and the mode of specification.
12: The production gains from specialization will be different.
Chapter 2: Foundations of Modern Trade Theory
13: when changing comparative advantage.
14: It will have a effect on the comparative advantage.
15；opportunity cost.
16: the measure of welfare separately on producers and consumers.
17: A country spends the money on B country that gains from C country, while B country spends the money on C country that gains from A country.
18: the improvement of working efficiency because of the specialization.
第二章综合训练 一、填空题（在空白处填上合适的答案） 1.三极管内有三个区，即区、区、区；有两个PN结，即结和结。 2.三极管发射区掺杂浓度较，以利于发射区向基区发射载流子；基区很薄，掺杂，以利于载流子通过；集电区比发射区体积大且掺杂，以利于收集载流子。 3.晶体三极管有多种分类方法，以内部三个区的半导体类型分有型和型；以工作频率可分为管和管；以用途可分为管和管；以半导体材料可分为管和管。 4.三极管内电流分配关系是。当I B有一微小变化时，就能引起I C有较大的变化，这种现象称为三极管的作用。 5.当三极管的发射结和集电结都正偏时，它就处于状态；当两者都反偏时，它处于状态。 6.三极管的三种联接方式是、和。 7.电流放大系数β是衡量三极管的能力的重要指标。β值太大，则三极管的差；β值太小，则三极管的差。、 8.场效应管又称为极型三极管，它是用控制，所以是控制型器件。 9.晶体三极管的穿透电流I CEO随温度的升高而，由于硅三极管的穿透电流比锗三极管的要，所以材料三极管的热稳定性要好。 10.一般情况下，晶体三极管的电流放大系数会随温度的升高而。 11.对于NPN型三极管，放大时其三个极的电位关系是，饱和时三个极的电位关系是；对于PNP型三极管，放大时其三个极管的电位关系是，饱和时三个极的电位关系是。 12.某NPN型三极管，若：①V BE>0，V BE< V CE，则管子是状态；②V BE<0，V BE< V CE，则管子是状态；③V BE>0，V BE >V CE，则管子是状态。 13.某PNP型三极管，若：①V BE<0，V BE> V CE，则管子是状态；②V BE>0，V BE> V CE，则管子是状态；③V BE<0，V BE< V CE，则管子是状态。 14. 结型场效应管的转移特性曲线显示在一定的下，和间的关系；结型场效应管的输出特性曲线是指在一定的下，和间的关系。输出特性曲线可分为三人眍，即区、区和区。 15.绝缘栅场效应简称管，可分为型和两种。 二、判断题（对的打“√”，错的打“×”） 1.三极管是由两个PN结组成的，所以可用两个二有管构成一只三极管。（） 2.晶体三极管是电压控制器件，场效应管是电流控制器件。（） 3.晶体三极管的穿透电流I CEO越小，其温度稳定性越好。（） 4.当三极管的发射结反偏或两端电压为零时，三极管处于截止状态。（） 5.一只晶体三极管的I B=0.04mA，I C=0.36mA，则其I E=0.32mA。（） 6.只要电路中三极管的I C(完整)高中数学必修三练习题
第三章 质量评估检测 时间：120分钟 满分：150分 一、选择题：本大题共12小题，每小题5分，共60分，在每小题给出的四个选项中，只有一项是符合题目要求的． 1．从甲、乙、丙三人中任选两名代表，甲被选中的概率( ) A.12 B.13 C.2 3 D ．1 2．将骰子向桌面上先后抛掷2次，其中向上的数之积为12的结果有( ) A ．2种 B ．4种 C ．6种 D ．8种 3．在面积为S 的△ABC 的内部任取一点P ，则△PBC 的面积小于S 2 的概率为( ) A.14 B.12 C.34 D.23 4．从一批产品中取出三件产品，设A ＝“三件产品全不是次品”，B ＝“三件产品全是次品”，C ＝“三件产品不全是次品”，则下列结论正确的是( ) A ．A 与C 互斥 B ．B 与 C 互斥 C ．任何两个均互斥 D ．任何两个均不互斥 5. 如图，是由一个圆、一个三角形和一个长方形构成的组合图形，现用红、蓝两种颜色为其涂色，每个图形只能涂一种颜色，则三个形状颜色不全相同的概率为( ) A.34 B.38 C.14 D.18 6．给甲、乙、丙三人打电话，若打电话的顺序是任意的，则第一个打电话给甲的概率是( ) A.16 B.13 C.12 D.23 7．在区间[－π，π]内随机取两个数分别记为a ，b ，则使得函数f (x )＝x 2＋2ax －b 2 ＋π2 有零点的概率为( ) A.π4 B ．1－π4C.4π D.4 π －1 8．如图所示，茎叶图表示的是甲、乙两人在5次综合测评中的成绩，其中有一个数字被污损，则甲的平均成绩超过乙的平均成绩的概率是 A.25 B.710 C.45 D.910 9．节日前夕，小李在家门前的树上挂了两串彩灯，这两串彩灯的第一次闪亮相互独立，且都在通电后的4秒内任一时刻等可能发生，然后每串彩灯以4秒内间隔闪亮，那么这两串彩灯同时通电后，它们第一次闪亮的时刻相差不超过2秒的概率是( ) A.14 B.12 C.34 D.78 10．一个数学兴趣小组有女同学2名，男同学3名，现从这个数学兴趣小组中任选2名同学参加数学竞赛，则参加数学竞赛的2名同学中，女同学人数不少于男同学人数的概率
2013年高三物理选择题专项训练（一） 14．如图所示，直线I、Ⅱ分别表示A、B两物体从同一地点开始运动的v-t图 象，下列说法中正确的是 A．A物体的加速度小于B物体的加速度B．t0时刻，两物体相遇 C．t0时刻，两物体相距最近D．A物体的加速度大于B物体的加速度 15．如图所示，物块A、B通过一根不可伸长的细线连接，A静止在斜面上， 细线绕过光滑的滑轮拉住B，A与滑轮之间的细线与斜面平行。则物块 A受力的个数可能是 A．3个B．4个C．5个D．2个 16．如图所示，A、B、C、D是真空中一正四面体的四个顶点。现在在A、B两 点分别固定电量为+q、-q的两个点电荷，则关于C、D两点的场强和电势， 下列说法正确的是 A．C、D两点的场强不同，电势相同B．C、D两点的场强相同，电势不同 C．C、D两点的场强、电势均不同D．C、D两点的场强、电势均相同 17．图示为某种小型旋转电枢式发电机的原理图，其矩形线圈在磁感应强 度为B的匀强磁场中绕垂直于磁场方向的固定轴OO′以角速度ω匀 速转动，线圈的面积为S、匝数为n、线圈总电阻为r，线圈的两端经 两个半圆形的集流环（缺口所在平面与磁场垂直）和电刷与电阻R连 接，与电阻R并联的交流电压表为理想电表。在t=0时刻，线圈平面 与磁场方向平行（如图所示），则下列说法正确的是 A．通过电阻R的是直流电B．发电机产生电动势的最大值E m= nBSω C．电压表的示数为D．线圈内产生的是交流电 18．2009年5月，英国特技演员史蒂夫·特鲁加里亚飞车挑战世界最大环形车道。如图所示，环形车道竖直放置，直径达12m，若汽车在车道上以12m/s恒定的速率运动， 演员与摩托车的总质量为1000kg，车轮与轨道间的动摩擦因数为0.1， 重力加速度g取10m／s2，则 A．汽车发动机的功率恒定为4.08×104W B．汽车通过最高点时对环形车道的压力为1.4×l04N C．若要挑战成功，汽车不可能以低于12 m/s的恒定速率运动 D．汽车在环形车道上的角速度为1 rad/s 19．如图所示，一竖直绝缘轻弹簧的下端固定在地面上，上端连接一带正电小球P，小球所处的空间存在着竖直向上的匀强电场，小球平衡时，弹簧恰好处于原长
KS61： 2.1SELECT 职工.编号, 职工.姓名, 职工.出生日期, 部门.名称FROM 人事管理!职工INNER JOIN 人事管理!部门ON 职工.部门编号= 部门.部门编号WHERE YEAR(职工.出生日期) BETWEEN 1985 AND 1989 ORDER BY 职工.出生日期, 职工.编号INTO TABLE cyqk.dbf 2.2 点新建---》类设置如下： 注意字母大小写 再点属性框设置：Height →120 ,Width→80 3. x=alltrim(thisform.textone.value) thisform.Gridone.recordsourcetype=4 thisform.Gridone.recordsource="SELECT 职工.姓名, 职工.性别, 职工.出生日期, 职工.编号FROM 人事管理!职工INNER JOIN 人事管理!部门ON 职工.部门编号= 部门.部门编号WHERE 部门.名称= x ORDER BY 部门.部门编号INTO TABLE tableone" KS62： 1.4 select 职称级别,基本工资from 职称表where 职称名="教授" into dbf prof.dbf order by 基本工资 2.1 create table职称系数表(职称名c(6),职称系数f(10,2)) &&有错误 insert into 职称系数表value ("教授" ,1.4) insert into 职称系数表value ("副教授" ,1.3) &&有错误 insert into 职称系数表value ("讲师" ,1.2) insert into 职称系数表value ("助教" ,1.0) SELECT 姓名, 系号,课时*80*职称系数+基本工资as 应发工资; FROM 职称系数表,教师表,职称表; &&有错误 WHERE 职称表.职称级别= 教师表.职称级别; AND职称表.职称名= 职称系数表.职称名; &&有错误 into dbf salary.dbf; order by 系号desc,应发工资 2.2点新建---》类设置如下：
高中数学必修三统计综合训练 一、单选题 1.某县教育局为了解本县今年参加一次大联考的学生的成绩，从5000名参加今年大联考的学生中抽取了250名学生的成绩进行统计，在这个问题中，下列表述正确的是（） A. 5000名学生是总体 B. 250名学生是总体的一个样本 C. 样本容量是250 D. 每一名学生是个体 2.某连队身高符合建国60周年国庆阅兵标准的士兵共有45人，其中18岁-19岁的士兵有15人，20岁-22岁的士兵有20人，23岁以上的士兵有10人，若该连队有9个参加阅后的名额，如果按年龄分层选派士兵，那么，该连队年龄在23岁以上的士兵参加阅兵的人数为（） A. 5 B. 4 C. 3 D. 2 3.下列结论正确的是（） ①函数关系是一种确定性关系；②相关关系是一种非确定性关系；③回归分析是对具有函数关系的两个变量进行统计分析的一种方法；④回归分析是对具有相关关系的两个变量进行统计分析的一种常用方法． A. ①② B. ①②③ C. ①②④ D. ①②③④ 4.在频率分布直方图中，小长方形的面积是（） A. 频率/样本容量 B. 组距×频率 C. 频率 D. 样本数据 5.在如图所示的“茎叶图”表示的数据中，众数和中位数分别是（） A. 23与26 B. 31与26 C. 24与30 D. 26与30 6.将参加夏令营的600名学生编号为：001，002，…,600. 采用系统抽样方法抽取一个容量为50的样本，且随机抽得的号码为003．这600名学生分住在三个营区，从001到300在第Ⅰ营区，从301到495住在第Ⅱ营区，从496到600在第Ⅲ营区，三个营区被抽中的人数依次为( ) A. 26, 16, 8, B. 25，17，8 C. 25，16，9 D. 24，17，9 7.某学校为了调查高三年级的200名文科学生完成课后作业所需时间，采取了两种抽样调查的方式：第一种由学生会的同学随机抽取20名同学进行调查；第二种由教务处对该年级的文科学生进行编号，从001到200，抽取学号最后一位为2的同学进行调查，则这两种抽样的方法依次为（） A. 分层抽样，简单随机抽样 B. 简单随机抽样，分层抽样 C. 分层抽样，系统抽样 D. 简单随机抽样，系统抽样 8.一批灯泡400只，其中20 W、40 W、60 W的数目之比为4∶3∶1，现用分层抽样的方法产生一个容量为40的样本，三种灯泡依次抽取的个数为（） A. 20 ,10 , 10 B. 15 , 20 , 5 C. 20, 5, 15 D. 20, 15, 5 9.（2014?湖南）对一个容量为N的总体抽取容量为n的样本，当选取简单随机抽样、系统抽样和分层抽
历史必修三选择练习题含答案
1. 仁的思想在先秦时期的进步意义主要是（ ） A. 满足新兴地主阶级的政治需要 B. 抑制统治者的暴政 C. 成为各国变法的理论依据 D. 奠定“非攻”主张的思想基础 2. 以下主张明显体现春秋战国时期儒家思想的是（ ） A. 仁者爱人，民贵君轻 B. 万物虚无，祸福相依 C. 兼爱非攻，节用尚俭 D. 以法为教，今必胜昔 3. “道之以政，齐之以刑，民免而无耻；道之以德，齐之以礼，有耻且格” ，这段论述应当 出自春秋战国时的（ ） A. 孔子 B. 老子 C. 庄子 D. 韩非 4. 下列言论属于孟子的是（ ） A. “性相近也” B ．“人无有不善” C ．“人之性恶，其善者伪也” D ．“人性之无分于善不善也” 5. 儒家思想成为中国封建社会的正统思想，主要原因是（ ） A ．有利于维护封建统治 B ．董仲舒的改造、推荐 C ．“君权神授”的观点，神化了皇权 D ．“三纲五常”是为人处世的道德标准 6. 孔子曰：“仁者，爱人，爱有差等。”墨子曰：“兼相爱，交相利”，“爱无差等”。造 成这种分歧的根源是（ ） A. 代表的阶级利益不同 B. 二人所处时代不同 C. 学术思想不同 D. 谈论的问题不同 7. “百家争鸣”局面形成与下列诸因素有关系的是（ ） ①封建经济的迅速发展 ②私学的兴盛 ③各国纷争的社会环境 ④社会的剧烈变革 A. ①② B. ③④ C. ②③④ D. ①②③④ 8. 从历史的角度看老子思想中最有价值的是（ ） A. 无为而治的政治主张 B. 小国寡民的思想 C. 唯物主义思想 D. 朴素辩证思想； 9. 韩非子说：“明主之国，无书简之文，以法为教，无先王之语，以吏为师。”其核心主张 是（ ） A. 取消文字； B. 实行吏治； C. 以法治国； D. 厚今薄古 10. 《道德经》载：“不尚贤，使民不争；不贵难得之货，使民不为盗；不见可欲，使心不乱。” “我无为，而民自 化；我好静，而民自正；我无事，而民自富；我无欲，而民自朴。”其含义是（ ） A. 同情人民疾苦，主张实行仁政 B. 主张统治者对人民加强控制； C. 统治者和被统治者的关系是相互依存的 D. 主张统治者清净无为以缓和阶级矛盾； 11. 下列有一项是不属于春秋战国时期儒家思想的，它是（ ） A. 要求统治者体察民情爱惜民力 B. 民为贵，君为轻，实行仁政 C. 人定胜天 D. 尚贤尚同 12. 汉武帝“独尊儒术” ，主要是利用儒家的（ ） A. 己所不欲，勿施于人主张 B. 民贵君轻主张 C. 性善论 D. 大一统的思想 13. 从战国“百家争鸣”到西汉“独尊儒术”的转变体现了（ ） ①中央集权的强化 ②思想控制的加强 ③大 一统局面的形成 ④儒家以外各学派的消亡 A. ②④ B. ①②④ C. ①③ D. ①②③ 14. 朱熹提出“存天理，灭人欲” ，其中“天理”主要是指（ ） C. 纲常伦纪，即为天理 D. 内心反省，以致良知 17. 下列所提到的历史现象或事件中，李贽应该会持反对意见的是（ ） A. 花木兰替父从军 B. 梁祝化蝶相随 C.商鞅变法 D. 神化孔子和儒家思想 18. 导致明清时期产生带有民主色彩思想的原因，除封建制度的日趋没落之外，还在于（ ） A. 抗清斗争高涨 B. 社会相对安定 C. 商品经济的发展 D. 阶级矛盾相对缓和 19. “世儒不察，以工商为末，妄议抑之。夫工固圣王之所欲来，商又使其愿出于途者，盖 皆本也。”这一 观点出现于（ ） A. 战国时期 B. 秦汉时期 C. 宋元时期 D. 明清时期 20. 孟子主张“民贵君轻” ，董仲舒主张“君权神授” ，黄宗羲认为君主专制是“天下之大害” 以下的解 释正确的是（ ） A. 孟子、黄宗羲都否定了君主专制制度 B. 三种主张都反映社会转型时期的剧变 21. 韩非子主张建立君主专制，而黄宗羲则抨击君主专制，根据他们各自所处的历史时期， 正确的评价是 （ ） A. 天体运行法则 B. 社会发展规律 C. 15. 主张通过内心的反省以“致良知”的是（ A. 孟子 B. 程颢、程颐 C. 16. 程朱理学和王阳明“心学”的共同点是封建道德规范和等级秩序 D. “天人感应”理论 ） 王阳明 D. 朱熹 ） 心外无物，心即理也 C.三种主张都遭到当时统治集团的轻视 D. 三种主张都与当时社会状况密切相关 A. 都是反面的 B. 都是进步的
江苏省高考政治三轮复习选择题专项训练（三）（含解析） 选择题专项训练(三) (建议用时：12分钟) 1．某机构曾调研全球十万个资产稳健增长的家庭，分析总结他们的家庭理财方式，发现较为合理的家庭资产分配方式是短期消费占比10%，意外重疾保障资金占比20%，股票、基金等占比30%，养老金、子女教育等保本升值的资金占比40%。这表明( ) ①要科学配置理财，不要把钱放在同一个篮子里 ②购买保险是规避风险的有效措施，可转移风险 ③家庭投资理财要把追求收益最大化放在首位 ④家庭理财方式的组合无规律可循，不应标准化 A．①②B．①③ C．②④D．③④ 2．某超市创新采用“内部合伙人”模式，将员工的身份由单纯的被雇佣者转变为不需要承担企业风险的合伙人，把员工的薪酬与超市利润捆绑起来，取得了巨大的成功。以果蔬部门为例，在行业损耗率超过30%的情况下，该超市损耗率只有4%－5%，净利润率达2.3%，领跑整个行业。该模式有利于( ) ①优化分配方式，激发员工积极性 ②员工利益与企业目标达成一致 ③降低外部风险，提高企业竞争力 ④实现经济效益与社会效益的统一 A．①②B．①③ C．②④D．③④ 3．人社部印发的《关于支持和鼓励事业单位专业技术人员创新创业的指导意见》，支持和鼓励专业技术人员挂职、参与项目合作、兼职、离岗创业。事业单位专技人员到企业挂职或者参与项目合作期间，与原单位在岗人员同等享有参加职称评审、项目申报、岗位竞聘、培训、考核、奖励等方面权利。实施这一意见的主要意义在于( ) ①合理配置人力资源，优化企业组织结构 ②缓解就业严峻形势，促进经济稳定增长 ③完善分配激励机制，释放创新创业活力 ④破除创业体制障碍，深化人才机制改革 A．①②B．①④ C．②③D．③④ 4．2010－2018年我国快递行业平均单价(元/件)如图所示。对图中所示的单价变化趋势
经济数学基础第2章导数与微分第一章典型例题与综合练习 第一节典型例题 一、极限计算 例1求极限lim n n n n n →∞ ++ -+ 2 2 1 254 解：原式= ++ -+ →∞ lim n n n n n 2 2 1 254 = ++ -+ →∞ lim n n n n n 1 11 2 54 2 2 = 1 2 例2求极限lim x x x x → - -+ 1 2 2 1 32 解：lim x→1 x x x x x x x x x x x 2 2 11 1 32 11 12 1 2 11 12 2 - -+ = -+ -- = + - = + - =- →→ lim ()() ()() lim 例3求极限lim sin x x x → -+ 11 2 解：lim x→0 11 2 -+ x x sin=)1 1( 2 sin )1 1 )( 1 1( lim 0+ + + + + - →x x x x x =lim x→0 x x sin2× lim x→0 - ++ 1 11 x= ) 2 1 ( 2 1 - ? =4 1 - 例4求极限lim() x x x →∞ + - 1 1 2 1 解：lim() x x x →∞ + -= 1 1 2 1lim() x x x →∞ - 1 1 2 lim() x x →∞ - 1 1 2 =+ - →∞ -? - lim()() x x x 1 1 2 2 1 2lim() x x →∞ - 1 1 2
经济数学基础 第2章 导数与微分 =+-? ???? ?→∞--lim()x x x 11221 2 lim() x x →∞-1121 e 21?=-e 1= 二、函数的连续性 例1讨论函数?? ???>+=<=0 2100e )(x x x a x x f x 在x =0处的连续性，并求函数的连续区间. 解：因为 a f x x x x ==+=+-→→)0(,1)21(lim ,1e lim 0 ，所以1 )(lim 0 =→x f x 当1≠a 时， ) (lim )0(0 x f f x →≠，即极限值不等于函数值，所以x =0是函数的一个 间断点，且当1≠a 时，函数的连续区间是),0()0,(+∞?-∞. 当1=a 时， ) (lim )0(0 x f f x →=，即极限值等于函数值，所以x =0是函数的一个连 续点，且当1=a 时，函数的连续区间是),(+∞-∞. 三、函数的可导性 例1设函数 f x ax b x x x ()=+>≤???002 若函数f x ()在点x =0处连续且可导，应如何选取系数a b ,? 解：因为0 )0(,)(lim ,0lim 0 20 ==+=+-→→f b b ax x x x 所以当b =0时函数f x ()在点x =0处连续. 又因为0 )(lim )0()0(lim lim )0(2 000=??=?-?+=??='---→?→?→?-x x x f x f x y f x x x '===+→→+ +f y x a x x a x x ()lim lim 000?????? 所以当a =0，b =0时函数f x ()在点x =0处可导.
必修三专题测试 一、（9分，每小题3分） 1．下列词语中加点的字，读音全都相同的一组是 A．累赘连累累积危如累卵 B．马厩灵柩内疚咎由自取 C．险峻骏马竣工怙恶不悛 D．休憩收讫栖身锲而不舍 2．下列各组词语中，书写全对的一组是 A．铮友撤消寥廓莫可明状 B．传颂慧星树阴至理名言 C．怄气俯首帖耳形销骨立万古长青 D．志大材疏真知卓见激流勇退坚忍不拔 3．依次填入下列各句横线上的成语，恰当的一组是 ①她一把鼻涕一把泪，呼天抢地________地哭得那么伤心。 ②文学批评中，不应把形式的模仿和内容的抄袭____________。 ③天快黑了，雨还是下个不停，前面的桥又被水冲坏，我们的确_________了。 ④江河奔流，火山爆发，地震，海啸，刮风，下雨，都是运动变化，诸如此类，真是________。Ａ．装腔作势等量齐观进退两难不计其数 Ｂ．装模作样相提并论骑虎难下不胜枚举 Ｃ．装腔作势混为一谈进退两难不胜枚举 Ｄ．装模作样相提并论骑虎难下不计其数 4．下列句子中没有语病的一句是 A．铅、锌被禁锢在火山岩凝固成的石头里，所以一般要发现它们是比较困难的。 B．他们谩骂法院执行人员，殴打执行公务的干警，这实属是藐视国家法律尊严与权威的违法行为。 C．目前一些学校成立的学生行为自律仲裁法庭是一种不同于传统灌输式教育的、别开生面的教育手段。 D．强调生活的教育意义，并不意味着可以用生活取代教育，因为生活毕竟带有零散性，并且还含有消极的东西。 二（9分，每小题3分） 阅读下面一段文字，完成7——10题。 再谈俗从何来 人俗，其艺未必俗。茨威格写巴尔扎克平生所为俗事连篇累牍，然而不碍其为旷代文豪。惟其艺不俗，故巴尔扎克自负其征服世界的魅力：“彼（指拿破仑）以剑锋创其始者，我将以笔锋竟其业。”雨果则在其坟前云：“当他站在时代上面去创造绝对价值，没有顾虑到去迎合同时代人的趣味时，巴尔扎克就到达最伟大的地步。”人俗如张瑞图，其字则高华典雅，绝无俗意。说赵孟俗，那是民族意识蒙蔽了审美意识，其实赵孟的字是不会与俗字联姻的。我们不为贤者讳，齐白石对金钱的爱慕和吝啬，的确去雅甚远，但齐白石的画俗吗？我们唯一的解释只能是人性的二元论，当上述大师趋附名利时，灵魂的蒸发物是“庸俗”，而当他们创造绝对价值时，灵魂的蒸发物是“高雅”。 最能悟到自身灵魂俗、雅二元组合和分裂的是托尔斯泰，他说有一个人性的托尔斯泰和一个兽性的托尔斯泰，而兽性的托尔斯泰恒为人性的托尔斯泰所打倒。亦如《伊德和自我》所云，原始的伊德显然是很不雅的；惟有“超我”的追逐，使伊德趋向完美。 显然当艺术家升腾着庸俗之气的时节，和天下的俗人没有任何区别，俗谚云“诗人之作清绝，
2018届高三物理选择题专题训练1 14．在法拉第时代，下列验证“由磁产生电”设想的实验中，能观察到感应电流的是（）A．将绕在磁铁上的线圈与电流表组成一闭合回路，然后观察电流表的变化 B．在一通电线圈旁放置一连有电流表的闭合线圈，然后观察电流表的变化 C．将一房间内的线圈两端与相邻房间的电流表相连，往线圈中插入条形磁铁后，再到相邻房间去观察电流表的变化 D．绕在同一铁环上的两个线圈，分别接电源和电流表，在给线圈通电或断电的瞬间，观察电流表的变化15．关于通电直导线在匀强磁场中所受的安培力，下列说法正确的是（） A．安培力的方向可以不垂直于直导线 B．安培力的方向总是垂直于磁场的方向 C．安培力的大小与通电直导线和磁场方向的夹角无关 D．将直导线从中点折成直角，安培力的大小一定变为原来的一半 16．如图，MN为铝质薄平板，铝板上方和下方分别有垂直于图平面的匀强磁场（未画出）。一带电粒子从紧贴铝板上表面的P点垂直于铝板向上射出，从Q点穿越铝板后到达PQ的中点O。已知粒子穿越铝板时，其动能损失一半，速度方向和电荷量不变。 不计重力。铝板上方和下方的磁感应强度大小之比为（） 2 A．2 B．2 C．1 D． 2 17．如图，用橡皮筋将一小球悬挂在小车的架子上，系绕处于平衡状态。现使小车从静止开始向左加速，加速度从零开始逐渐增大到某一值，然后保持此值，小球稳定地偏离竖直方向某一角度（橡皮筋在弹性限度内）。与稳定在竖直位置时相比，小球的高度（）A．一定升高B．一定降低 C．保持不变D．升高或降低由橡皮筋的劲度系数决定 18．如图（a），线圈ab、cd绕在同一软铁芯上。在ab线圈中通以变化的电流，用示波器测得线圈cd间电压如图（b）所示。已知线圈内部的磁场与流经线圈的电流成正比，则下列描述线圈ab 中电流随时间变化关系的图中，可能正确的是（）
关于国二的一些说明 一．国二【全国计算机等级二级考试】的考试时间及费用： 国二（NCRE）考试每年有两次考试时间，上半年3月份或4月份有一次，其报名时间为2月份开学不久；下半年是9月份的一次，其报名时间为6-8月份，报名费一般是100元，这些到时候学校会通知给学委的，我们听学委的就行了，考试分为笔试和机试笔试一般在机试的上午考。 选择题：35*2’，其中有10*2’是公共基础知识部分。 笔试部分： 15*2’，其中有5*2’是公共知识部分。15个空 VB 基本操作题：四个小题，前面两小题：7分每个，后面 两小题8分每个，总共30分。 单应用题：两小题每小题20分，总共40分。 机试部分 综合应用题：30分。 笔试部分：35*2’,15*2’ 程序填空题：30’ VC（C语言） 上机部分：程序改错题：30’ 编程题：40’
其中上机时间和笔试时间均为90分钟。 三．国二和省二的区别以及考证的需要： 1.省二考试时间：上半年是5月底，下半年是11月底报名费用一般为35元，报名时间学校也会下发通知。 2.省二【全国高校计算机联考（江西考区）】也是包括上机和笔试两个部分的，其中60分是考office，40分为所修课程内容。 3.国二证：证书示例 笔试机试均为90分以上会印有优秀字样。 4.证书的作用： 根据九江学院学士学位授予条例中的第八条的第五点明确说明未取得全国高校计算机联考（江西考区）一级及以上或未取得全国计算机等级考试一级级以上者（不在本校报名参加的考试成绩视为无效）不授予学士学位。另技能分加四分，二级以上加八分。 四．公共基础知识部分： 1. 数据结构与算法 2. 程序设计基础 3. 软件工程基础 4. 数据库设计基础
七下第2章《对环境的察觉》综合训练 基础强化 、选择题（每题2分，共30分。） 1 ?随着手机的广泛普及，随处可见“低头族”，长期用耳机听音乐可能会损伤对声波敏感的细胞， 使听力下降；长期玩手机可能会损伤对光敏感的细胞，使视力下降，上述两类细胞分别位于（ ） A.外耳道、虹膜 B. 鼓膜、瞳孔 C.耳蜗、视网膜 D.咽鼓管、脉络膜2. 2016年5 月9日19时12分左右，“水星凌日”的天象于本世纪第三次出现?如图所示，水星如 一颗小黑痣从太阳“脸上”缓慢爬过。它的形成与下列光现象原理相同的是（） A.小孔成像 B.河水看起来变浅 C.海市蜃楼 D.水中荷花的倒影 S3?图第J題图 3?构建思维导图是整理知识的重要方法，如图是小金复习光学知识时构建的思维导图，图中I处可补充的现象（） A.镜子中的“自己” B. 湖水有青山的倒影 C.阳光下绿树的影子 D. 岸上的人看到水中的“鱼” 4?如图所示，一束光线斜射到平面镜上，其中反射角是（） A.Z 1 B . Z 2 C . Z 3 D . Z 4 5.下列对各光学现象的相应解释或描述，正 确的是（） ABC A.影子是由于光的反射形成的 B.蜡烛远离平面镜时，蜡烛的像变小 C.插在水中的铅笔“折断”了，是因为光的折射 D.只将F板绕ON向后转动，还能在F板上看到反射光线 D
6.下列声现象中，能说明声音的传播需要介质的是（）
&在学校组织的文艺汇演中，小希用二胡演奏了《二泉映月》 ，如图所示。演奏 过程中，她不断变 换手指在琴弦上的位置，其目的是为了改变（ ） A.声音的响度 B. 声音的音色 C.声音的音调 D. 琴弦的振幅 9?如图，小明将一端系有乒乓球的细绳栓在横杆上，当鼓槌敲击鼓面时的力度越大时，乒乓球跳动 高度越高，该实验中使用的乒乓球目的是（ ） A. 研究乒乓球的发声是由于乒乓球的跳动产生的 B. 研究乒乓球发声的响度与其与其跳动高度的关系 C. 研究乒乓球的跳动高度与敲击鼓面力度大小关系 D. 显示鼓面振动幅度 10?如图所示的鹦鹉在太阳光下可以看到，嘴是红色的，腹部是白色的，而尾部是绿色的.在漆黑 茂现昆里 B.例车宙达 C.趙声豉清洗机 D.真空罩中 的闹钟 * 7?如图是某人观察物体时，物体在眼球内成像示意图，则该人所患眼病和纠正时应配制的眼镜片分 别是（ ） A.远视 凹透镜 B. 远视 凸透镜 C. 近视凹透镜D.近视凸透镜 的房间内，小华在红光下观察该鹦鹉（ A.嘴和腹部是红色的，尾部是黄色的 C ?嘴和尾部是黑色的，腹部是红色的 ） B. 嘴和尾部是红色的，腹部是黑色的 D. 嘴和腹部是红色的，尾部是黑色的 第9 Mffl
第一章人体的内环境与稳态 1 ?体液 < ____________ 》内环境 k _____________ 丿 2 ?血浆、组织液、淋巴之间的关系 血浆 细胞内液组织液淋巴 3 ?血浆组织液淋巴其成分有什么差异？ 4. _______________________ 细胞外液是指__ 、 ___________ 、 ____________________________ 。其理化性质有 _______________ 5 ?渗透压是指______________________________ 溶质微粒越多，渗透压越______ ?人体的渗透压主要取决于 ______ 禾廿_____ 两种离子。 6 ? 稳态是指_______________________________________________________________ 7?细胞只有通过________ 才能间接地与外界进行物质交换，除此之外，还需要其他器官和系统 的协调配合，这些器官和系统都有哪些，请举例：____________________________________ 。8. __________________________________________ 机体维持稳态的机制是
第二章动物和人体生命活动的调节（一） 1. 神经调节的基本方式： _____________ ，也就是在 ____________ 参与下，动物体或人体对 做出的规律性应答。完成反射的结构基础是，它由、、、、五部分组成。 2 .兴奋是以________ 的形式沿着神经纤维传到的，也叫 ________________ ，而且在神经纤维上的 传导是 ___ 向的。 3 .在未受刺激时，由于神经纤维膜两侧的离子分布特点，两侧的电位差为__________ ,称为 _________ 电位。在受到刺激时膜两侧的电位表现为_____________ ，称为 __________ 电位。产生两种电位差的原因分别是什么？请分析说明： 4. 兴奋在神经元间的传递方向是单向还是双向的？为什么？ 5. ______________________________________________ 突触小体是指______________________ 突触是指： ____________________________________________ 6. 举出各级中枢并说明他们具有什么作用? 7. __________________________________________ 大脑皮层的言语区若W区发生障碍不能, V区发生障碍不能 __________________________________ , S区发生障碍 不能 _____ , H区发生障碍不能________ 。 第二章动物和人体生命活动的调节（二） &激素调节是指 __________________________________________________
选择题专项训练(三) 山东某校地理兴趣小组于3月21日前往图4所示区域进行地理观测，图中等高距为200米。据此完成1～3题。 1．图中Q地的海拔高度可能是 A．160米 B．380米 C．680米 D．980米 2．15时（地方时）Q地的观测者看到太阳在P地落下，据此判断河流干流大致的流向是 A．东北流向西南 B．西南流向东北 C．西北流向东南 D．东南流向西北 3．若图示森林急剧减少，对当地水循环的影响将主要有 ①坡面汇流速度加快②水汽输送量减少③蒸腾、蒸发量加大④地下径流减少 A．①② B．③④ C．②③ D．①④ 下图是我国东部4城市日照时数（曲线）和降水量的年变化图。回答4～5题。 4．图中4城市纬度由高到低依次是 A．丙甲乙丁 B．乙丙丁甲 C．丙甲丁乙 D．丁丙乙甲[来源:] 5．5月份，丙地日照时数大于丁地的主要原因是 A．太阳辐射强度大 B．正午太阳高度大 C．受低气压控制 D．白昼时间长且多晴天 6日０时20分。据此完成6～7题。 6、图中甲地时间为（） A．5日5时20分B．6日6时20分C．6日5时20分D．5日6时20分 7、当日下列城市白昼最长的是（） A．悉尼B．上海C．雅加达D．莫斯科
水量盈余率是衡量水库蓄水量变化的重要指标(水量盈余率＝流入量／流出量)。右图为北半球某水库各月水量盈余率统计图，读图完成8～9题。 8．下列说法正确的是( ) A ．12月份水库的储水量最大 B ．3月份水库的储水量最大 C ．6月份水库的储水量最小 D ．9月份水库的储水量最大 9．该水库库区所处的自然带最有可能是( ) A ．亚热带常绿阔叶林带 B ．亚热带常绿硬叶林带 C ．温带落叶阔叶林带 D ．温带针叶林带 下图示意欧州部分城市冬、夏季气温状况。读图完成10～11题。 10．城市a ～c ( ) A ．气候大陆性自东向西逐渐增强 B ．年降水量自西向东呈递减趋势 C ．夏季温和，冬季寒冷，全年湿润 D ．年太阳辐射量自东向西逐渐变大 11．影响城市a ～e 气温差异的主要因素是 ( ) A ．大气环流、海陆位置 B ．纬度位置、海陆位置 C ．大气环流、地形地势 D ．纬度位置、地形地势 图3为“世界某区域图”，图4是风力统计曲线，其中两条折线对应图中甲、乙两地，读图回答12～13题 图5 图6 12．甲、乙两地对应的风力统计曲线是 A ．甲—①、乙—② B ．甲—③、乙—② C ．甲—②、乙—③ D ．甲—②、乙—① 13．造成甲、乙两地一年中风力大小差异的原因是 ①气压带、风带的季节移动 ②地形起伏 ③海陆热力性质差异 ④海陆位置 A ．①②④ B ．①③④ C ．①②③ D ．②③④ 1 2 3 4 5 6 7 (月份) 8 9 10 11 12 0 1 3 2 4 6 5 风 力 (级 )
3 二、文字处理题(共30分) 请在【答题】菜单下选择【进入考生文件夹】命令，并按照题目要求完成下面的操作。 注意：以下的文件必须保存在考生文件夹[%USER%]下。 在考生文件夹下打开文档WORD ．DOCX ，按照要求完成下列操作并以该文件名(WORD ．DOCX)保存文件。 按照参考样式“word 参考样式．jpg”完成设置和制作。 具体要求如下： (1)设置页边距为上下左右各2．7厘米，装订线在左侧；设置文字水印页面背景，文字为“中国互联网信息中心”，水印版式为斜式。 (2)设置第一段落文字“中国网民规模达5．64亿”为标题；设置第二段落文字“互联网普及率为42．1%”为副标题；改变段间距和行间距(间距单位为行)，使用“独特”样式修饰页面；在页面顶端插入“边线型提要栏”文本框，将第三段文字“中国经济网北京l 月15日讯中国互联网信息中心今日发布《第31展状况统计报告》。”移入文本框内，设置字体、字号、颜色等；在该文本的最前面插入类别为“文档信息”、名称为“新闻提要” 域。 (3)设置第四至第六段文字，要求首行缩进2个字符。将第四至第六段的段首“《报告》显示”和“《报告》表示”设置为斜体、加粗、红色、双下划线。 (4)将文档“附：统计数据”后面的内容转换成2列9行的表格，为表格设置样式；将表格的数据转换成簇状柱形图，插入到文档中“附：统计数据”的前面，保存文档。 1）【解题步骤】 步骤1：打开考生文件夹下的素材文件"Word.docx"。 步骤2：单击【页面布局】选项卡下【页面设置】组中的"页面设置"按钮，打开"页面设置"、管路敷设技术通过管线敷设技术，不仅可以解决吊顶层配置不规范问题，而且可保障各类管路习题到位。在管路敷设过程中，要加强看护关于管路高中资料试卷连接管口处理高中资料试卷弯扁度固定盒位置保护层防腐跨接地线弯曲半径标高等，要求技术交底。管线敷设技术中包含线槽、管架等多项方式，为解决高中语文电气课件中管壁薄、接口不严等问题，合理利用管线敷设技术。线缆敷设原则：在分线盒处，当不同电压回路交叉时，应采用金属隔板进行隔开处理；同一线槽内，强电回路须同时切断习题电源，线缆敷设完毕，要进行检查和检测处理。、电气课件中调试对全部高中资料试卷电气设备，在安装过程中以及安装结束后进行高中资料试卷调整试验；通电检查所有设备高中资料试卷相互作用与相互关系，根据生产工艺高中资料试卷要求，对电气设备进行空载与带负荷下高中资料试卷调控试验；对设备进行调整使其在正常工况下与过度工作下都可以正常工作；对于继电保护进行整核对定值，审核与校对图纸，编写复杂设备与装置高中资料试卷调试方案，编写重要设备高中资料试卷试验方案以及系统启动方案；对整套启动过程中高中资料试卷电气设备进行调试工作并且进行过关运行高中资料试卷技术指导。对于调试过程中高中资料试卷技术问题，作为调试人员，需要在事前掌握图纸资料、设备制造厂家出具高中资料试卷试验报告与相关技术资料，并且了解现场设备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况，然后根据规范与规程规定，制定设备调试高中资料试卷方案。 、电气设备调试高中资料试卷技术电力保护装置调试技术，电力保护高中资料试卷配置技术是指机组在进行继电保护高中资料试卷总体配置时，需要在最大限度内来确保机组高中资料试卷安全，并且尽可能地缩小故障高中资料试卷破坏范围，或者对某些异常高中资料试卷工况进行自动处理，尤其要避免错误高中资料试卷保护装置动作，并且拒绝动作，来避免不必要高中资料试卷突然停机。因此，电力高中资料试卷保护装置调试技术，要求电力保护装置做到准确灵活。对于差动保护装置高中资料试卷调试技术是指发电机一变压器组在发生内部故障时，需要进行外部电源高中资料试卷切除从而采用高中资料试卷主要保护装置。
必修三选择题（基础篇）_ 选择题必修3训练（基础篇） 单项选择题（共100道） 1、春秋战国时期“百家争鸣”局面出现的根本原因是（） A.新兴地主阶级日益崛起 B.各国相继变法 C.战争频繁 D.社会处于经济、政治大变革时期 2．“百家争鸣”局面的形成与下列诸因素有关系的是 ①封建经济的迅速发展②私学的兴盛③各国纷争的社会环境④社会的剧烈变革 A．①② B．③④ C．②③④ D．①②③④ 3、以下主张明显体现春秋战国时期儒家思想的是 A．仁者爱人，民贵君轻 B．万物虚无，祸福相倚C．兼爱非攻，节用尚俭 D．以法为教，今必胜昔 4、下列有关孔子的说法正确的是： A、开创了中国古代私人讲学之风 B、在政治上主张“无为而治” C、孔子整理过《诗经》《春秋》《论语》 D、主张“民贵君轻” 5、在一次国际学术研讨会上，外国学者引用了2300多年前中国思想家的名言：“天时不如地利，地利不如人和。”这位思想家是（） A.老子 B.孔子 C.孟子 D.荀子 6、下列关于战国时期诸子百家思想地位的评价正确的是（） A.儒家思想占统治地位 B.墨家思想占主导地位 C.法家备受统治者推崇 D.道家最受欢迎 7、董仲舒说：“今师异道，人异论，百家殊方，指意不同，是以上亡以持一统。”为此，他向汉武帝提出 A.天人感应学说 B.君权神授学说 C.独尊儒术建议 D.崇尚法治主张 8、从战国“百家争鸣”到西汉“独尊儒术”的转变体现了（） ①中央集权的强化②思想控制的加强 ③大一统局面的形成④儒家以外各学派的消亡 A.②④ B.①②④ C.①③ D.①②③ 9、隋唐时期儒学家们针对当时的发展趋势，提出了（） A.天人感应学说 B.三教合一主张 C.经世致用主张 D.重农抑商思想
1. A.am, are, is B.am, is are C.are, is am 2. ___boys are in the rain. A.Two B.One C.A 3.This is Kitty. ___thin. A.she’s B.He’s C.She’s 4.I’m___girl. I’m ___fat. A.an, / B.a, / C./, a 5. ---___are you ? ---I’m Alice. A.How B.What C.Who 6. ---You ___Kitty. ---Yes, I___Kitty. A. are, are B. are, am C. is, am 7. ---Who is ___? ---My mother. A. he B. she C. it 8. ---Who is this girl? ---______. A. He’s Peter. B. She’s Kitty. C. It’ 9. ---Are you ___brother? ---No. A. I B. my C. me 10. ____brother is tall. ___brother is short. A. A, A B. You, I C. My, Your 11. Hello, I’m Joe. ___eyes are big. A. my B. me C. My 12. ---___your grandfather? ---No, ___. A. he is, he isn’t B. Is he, he isn’t 13. ---______? ---Very well, thank you. A. Who are you B. Here you are 14. ---Who ___you? ---I___Alice. A. am, am B. are, am C. am, are 15. Lucy is six. She is thin. She’s short. She’ A. small B. big C. fat 16. ---Who is she? ---She’s my___. A. little sister B. little brother C. father 17. My ears ___long. My tail ___ short. I’ A. are, is B. is, are C. are, are 18. My cat is ___. A. big and small B. big and fat 19. This is ___ classroom. A. my B. me c. I 20. Close ___door, please. A. / B. a C. the C. sorry ’s broken! B. I’m fine. C. I’m Tom. C. in ’s Sally. B. No, he isn’t. C. No, she isn’t. ’s cold. B. Sorry, Peter. C, Thank you. B. Open C. Spell B. many C. / C./ B. apples C. orange B. banana, pears C. bananas, pear C. Thank you B. me C. you C. is B. How old are you C. How are you B. This C. They B. They are C. Are these B. apple C.chairs