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An ordinary letter cannot exceed 20 grams.

Heavy trucks: medium trucks with a load of more than 8 tons: 4-8 tons; Light truck: load capacity 1-3.5 tons; Small truck; The load capacity is below 1 ton.

According to the new data, Mount Qomolangma is the highest mountain, and the latest height of Mount Qomolangma, the highest peak in the world, has been measured, which is 8844.43m, which is 3.7m lower than the 8848.13m published by China in 1975. The latest height is 8844.43 meters. 1 2003/05/ 13 encyclopedia knowledge: what tree is called a "living fossil"?

2003/05/ 13 Answer: Ginkgo tree is called "living fossil", which is also called Ginkgo tree and Gongsun tree and belongs to Ginkgo family. These trees are 40 meters high.

3 2003/05/ 14 Encyclopedia knowledge: China folks send kitchen gods to eat sticky sweets. What is this for?

4 2003/05/ 14 Answer: In China, folks sent Kitchen God to eat sweets that stick to his teeth, in order to stick the teeth with sugar. There are many folk customs in China. If you pay attention, you will find many interesting things.

5 2003/05/ 15 Encyclopedia knowledge: Are the ears of African elephants bigger or smaller than those of Asian elephants?

6 2003/05/ 15 Answer: The difference between African elephants and Asian elephants is not only their habitat, but also their appearance. For example, African elephants have bigger ears and Asian elephants have smaller ears. The ivory of African elephants is obviously hermaphrodite, while that of Asian elephants only exposes males.

7 2003/05/ 16 encyclopedia knowledge: which is the largest island in Europe?

Answer: Great Britain is the largest island in Europe. It is located in the Atlantic Ocean of Western Europe, covering an area of 220,000 square kilometers. It is the main part of British territory.

9 2003/05/ 17 encyclopedia knowledge: Who is the composer of the campus song "Childhood"?

10 2003/05/ 17 Answer: The composer of the campus song "Childhood" is Tayu Lo, and this song is still loved by many students.

112003/05/18 encyclopedia knowledge: who is the composer in The Yellow River Cantata?

12 2003/05/ 18 answer: The Yellow River Cantata, written by Guang Weiran and composed by Xian Xinghai, shows the suffering and tenacious struggle of the people of China in War of Resistance against Japanese Aggression, and shows the great spirit and invincible strength of our nation.

13 2003/0519 Encyclopedia knowledge: Which scenic spot does Li Bai's "Flying straight down to thousands of feet, it is suspected that the Milky Way has set for nine days" refer to?

14 2003/05/ 19 Answer: Look at Lushan Waterfall Li Bai, a great poet in the Tang Dynasty: "The incense burner in Rizhao emits purple smoke, and the waterfall hangs far in front of Sichuan. Flying down three thousands of feet, it is suspected that the Milky Way has fallen for nine days. " It describes the scenery of Lushan Mountain.

15 2003/05/20 Encyclopedia knowledge: Did Portugal ever have colonies in North and South America?

16 2003/05/20 Answer: The developed navigation activities in Europe and Columbus' discovery of the new continent made North and South America a colony of many European countries, but Portugal never had a colony in North and South America.

17 2003/05/2 1 encyclopedia knowledge: what kind of handicrafts does "turtle pattern" appear in?

18 2003/05/2 1 Answer: Tortoise pattern refers to the unpleasant net pattern caused by improper angle matching of the public version during proofing or printing. This pattern often appears in batiks.

19 2003/05/22 encyclopedia knowledge: where is the lowest country in the world?

Answer: The Netherlands is near the North Sea and is the lowest country in the world. The Dutch coastline twists and turns, with a total length of 1075 km, but the seawall is twice as long as the coast, with a total length of 24 14 km.

2 1 2003/05/23 Encyclopedia knowledge: What kind of drink is not suitable for fever?

22 2003/05/23 Answer: It is harmful to drink strong tea when you have a fever, because theophylline contained in tea will raise the temperature of human body, affect the effect of cooling drugs, and thus aggravate your illness, so it is not advisable to drink tea when you have a fever.

23 2003/05/24 Encyclopedia Knowledge: What language does the word "montage" come from?

24/05/24/2003 Answer: "Montage" originated from French and was originally an architectural term, meaning combination and composition. Used in movies, it means "splicing".

25 2003/05/25 Encyclopedia knowledge: How many atria and ventricles does the human heart have?

Answer: The heart has four chambers, namely left atrium, left ventricle, right atrium and right ventricle. Wherein the left atrium communicates with the left ventricle and the right atrium communicates with the right ventricle.

27 2003/05/26 Encyclopedia Knowledge: Is the largest peninsula in Europe in southern Europe or northern Europe?

Answer: Scandinavia is the largest peninsula in Europe. It is located between Barents Sea, Norwegian Sea, North Sea and Baltic Sea, covering an area of 800,000 square kilometers.

29 2003/05/27 Encyclopedia Knowledge: Where are the hydropower resources mainly distributed in China?

2003/05/27 Answer: Distribution characteristics of water resources in China: more in the south, less in the north, more in summer and autumn, less in winter and spring. China ranks first in the world in hydropower resources, 70% of which are distributed in southwest China.

3 1 2003/05/28 encyclopedia knowledge: which playwright's work is a doll's house?

A: A Doll's House is a famous social drama by henrik ibsen, the greatest dramatist in the 9th century. It was written in the 9th century.

33 2003/05/29 Encyclopedia Knowledge: In the pre-Qin period, the images and patterns of dragons were generally compared. Why?

2003/05/29 Answer: In the pre-Qin period, the image and pattern of dragons were generally compared to gentlemen. From ancient times to the Ming and Qing Dynasties, the dragon pattern has undergone numerous changes, and its shapes are also extremely rich.

35 2003/05/30 Encyclopedia knowledge: Many animals have charged or glowing organs. Are these organs used for lighting correctly?

2003/05/30 Answer: Many animals have charged or glowing organs, but these organs are not used for lighting.

37 2003/05/3 1 encyclopedia knowledge: Babies need an essential amino acid more than adults, don't they?

38 2003/05/3 1 Answer: There are eight kinds of amino acids that must be obtained in food in protein. These eight amino acids are called essential amino acids. Histidine is the ninth essential amino acid for infants, but not for adults.

39 2003/06/0 1 Encyclopedia Knowledge: Was the Pathetic Symphony written by Tchaikovsky?

Answer: The Sixth Symphony (Symphony of Sorrow) was written by Pyotr Il'yich Tchaikovsky in the last year of his life (1893).

4 1 2003/06/02 Encyclopedia knowledge: Where is the origin of Pu 'er tea?

2003/06/02 Answer: Pu 'er tea is produced in Yunnan and other frontier areas. Simao is a world-famous Pu 'er tea producing area and one of the largest tea producing areas in China.

Encyclopedia: What is the slogan of the Olympic Games?

A: Father Didong once put forward the slogan of "swifter, higher and stronger". Coubertin, the "father of the Olympics", appreciated and agreed with this slogan very much, so he took it as the slogan of the international Olympic Games.

Encyclopedia knowledge: Picasso published a painting around 1950 and won the international peace prize. What kind of painting is this?

2003/06/04 Answer: Picasso published a painting around 1950 and won the international peace prize. This painting is the "dove of peace", and because of this painting, "dove" has since become synonymous with peace.

2003/06/05 Encyclopedia Knowledge: Is the longest river flowing into the Atlantic Ocean the Amazon River?

2003/06/05 Answer: Yes. The Amazon River is the largest river in the world, which flows through eight countries including Peru, Ecuador, Colombia, Venezuela, Guyana, Suriname, Bolivia and Brazil, and finally flows into the Atlantic Ocean.

2003/06/06 Encyclopedia Knowledge: What is the cause of "solar eclipse"?

2003/06/06 Answer: The solar eclipse happened because the moon was blocked between the earth and the sun, and only a part of the sun could be seen during the day. Similarly, the solar eclipse is because the earth is between the moon and the sun.

5 1 2003/06/07 encyclopedia knowledge: where is the origin of the famous rice wine "jiafan wine"?

2003/06/07 Answer: Shaoxing yellow rice wine is one of the native products of Zhejiang. Shaoxing yellow rice wine is the best of China yellow rice wine, which has a long history and has been recorded in all dynasties.

53 2003/06/08 Encyclopedia knowledge: How long is the growth cycle of eyebrows?

A: The growth period of eyebrows and eyelashes is 2 months, and the dormancy period can be as long as 9 months. The speed of hair growth is influenced by gender, age, place and season.

55 2003/06/09 Encyclopedia Knowledge: What kind of racket with rubber and sponge do fast-break table tennis players usually choose?

2003/06/09 Answer: Plastic sponge bat. Elastic concentration, fast hitting speed, strong hitting power, can use a variety of hitting techniques, create a variety of rotations, speed-oriented, suitable for fast-break players.

57 2003/06/ 10 encyclopedia knowledge: which country left the earliest record of Halley's comet?

Answer: China people. China's Spring and Autumn Annals records that "in the 14th year of Duke Wen of Lu (6 13 BC), Beidou had a star". This is the earliest record of Halley's comet in the world.

59 2003/06/ 1 1 Encyclopedia knowledge: What is the earliest monograph on traditional Chinese medicine in China?

60 2003/06/ 1 1 Answer: Huangdi Neijing, referred to as Neijing, is the earliest masterpiece of Chinese medicine in China, the first wonderful book in medicine, and it is still the most important classic document that must be read in studying and studying Chinese medicine.

612003/0612 encyclopedia knowledge: what does "completely different" mean?

2003/06/ 12 answer: "distinctive" means that the Jinghe River is clear and the Weihe River is turbid. When the water from Jinghe River flows into Weihe River, the boundary between clarity and turbidity is very obvious. "The Book of Songs-Gao Feng-Gu Feng": "Jing Hunhun, its muddy."

63 2003/06/ 13 Encyclopedia knowledge: Which dynasty did instant-boiled mutton originate in China?

Answer: Instant-boiled mutton originated in the Yuan Dynasty. When Kublai Khan commanded the southern expedition, the enemy approached and he became hungry. The cook put the mutton slices in boiling water, and when the meat color changes, he picked up the salt. After eating, he led the army to meet the enemy and won.

65 2003/06/ 14 Encyclopedia knowledge: What is steel made of?

66 2003/06/ 14 Answer: Steel is an alloy of iron, with a carbon content of 0.03%-2% and a low content of elements such as sulfur and phosphorus. If you pay more attention, you will find that many items are made of steel.

67 2003/06/ 15 Encyclopedia knowledge: What is the softest stone known to mankind at present?

2003/06/ 15 Answer: At present, the softest stone known to mankind is talc, which is sweet, light and cold, and has the functions of clearing away heat, promoting diuresis, relieving stranguria and relieving summer heat.

69 2003/06/ 16 Encyclopedia knowledge: Where is the first organ of human aging?

July 2003 /06/ 16 Answer: Thymus is the first aging organ of human body. Eat more fruits and vegetables and supplement vitamins A, C, E, Se and Zn. Can play a role in maintaining the thymus.

712003/0617 encyclopedia knowledge: what is the most sun-resistant fabric?

72 2003/06/ 17 answer: among all fabrics, acrylic fabric is the most resistant to sunlight; Silk is the least resistant to sunlight, so it should be dried in the shade after washing. Usually clothes should be dried according to the rules of fabrics, otherwise clothes will not last.

73 2003/06/ 18 Encyclopedia knowledge: For whom is the conclusion that "the heart is higher than the sky and people are modest" in A Dream of Red Mansions?

74 2003/06/ 18 Answer: Qingwen. Qingwen's verdict in A Dream of Red Mansions said: "The bright moon is hard to meet, and the colorful clouds are easy to disperse. The heart is higher than the sky, it is cheap, and the romantic cleverness attracts people's resentment. Life is full of slander, and it is full of affection. "

75 2003/06/ 19 Encyclopedia knowledge: "If winter comes, can spring be far behind?" Who said that?

76 2003/06/ 19 Answer: "If winter comes, can spring be far behind" is a famous sentence written by Shelley, a British romantic poet, in ode to the west wind. Modern people often say this sentence to encourage each other.

77 2003/06/20 Encyclopedia Knowledge: Is pig iron hard and brittle because it contains more or less carbon?

2003/06/20 Answer: Pig iron is hard and brittle because it contains a lot of carbon. The carbon content of pig iron is more than 2%, that of wrought iron is less than 0.05%, and that of steel is between 0.05% and 2%.

79 2003/06/2 1 Encyclopedia Knowledge: What does American psychologist and behaviorist Maslow think is the highest need of human beings?

80 2003/06/2 1 Answer: Maslow, an American psychologist and behaviorist, divided human needs into five levels: physiology, safety, socialization, respect and self-realization, of which the highest level is "self-realization".

8 1 2003/06/22 encyclopedia knowledge: what are the reasons for the formation of circles on agate?

2003/06/22 Answer: Agate is a timely variety of chalcedony, with exquisite patterns, and the patterns on it were formed at different times. There are many kinds of agate, such as striped agate, moss agate and water bile agate.

2003/06/23 Encyclopedia Knowledge: What should be used to keep camellia fresh?

2003/06/23 Answer: First, add a little salt into the bottle and mix well, then arrange flowers. This is a method of maintaining vase flower arrangement, that is, soaking in salt water. This method is suitable for alkaline camellia, daffodil and so on.

2003/06/24 Encyclopedia Knowledge: Where does the seven-inch "snake" mean?

2003/06/24 Answer: "Seven inches" refers to the heart of a snake. As the old saying goes, "Catch the thief first, then the king, and hit the snake seven inches" is often used to describe a strategic attack that catches the key of the other side.

2003/06/25 Encyclopedia Knowledge: What is the lowest elevation of the Dead Sea?

2003/06/25 Answer: The Dead Sea is the lowest water area on the earth, with an average water level of about 400 meters below sea level. It is an inland salt lake between Israel and Jordan, with the lowest elevation of -392 meters.

2003/06/26 Encyclopedia Knowledge: What was the ancient long jump for?

90 2003/06/26 Answer: In ancient times, the long jump was to avoid wild animals. Due to the development of history, the long jump has deviated from this purpose, forming various forms of long jump such as standing long jump, acute long jump and triple jump.

9 1 2003/06/27 Encyclopedia Knowledge: What is the highest honor of an international nurse?

Answer: Nightingale Medal. It was established by the International Committee of the Red Cross to encourage outstanding nursing staff who have made outstanding contributions to the humanitarian cause all over the world. Winning this award is the highest honor in a nurse's life.

93 2003/06/28 Encyclopedia Knowledge: Jiuquan, Gansu, which is famous for launching satellites, has a long history and splendid culture. At present, ancient relics such as Mogao Grottoes, Yulin Grottoes and Dunhuang Ancient City are well preserved. How did Jiuquan get its name?

94 2003/06/28 Answer: Huo Qubing, a famous soldier in the Western Han Dynasty, was stationed here after defeating the Xiongnu. In recognition of his meritorious service, Emperor Wu of the Han Dynasty sent someone to deliver wine. Huo Qubing didn't want to keep it for himself, so he poured the wine into the spring and drank it with the soldiers, hence the name Jiuquan.

95 2003/06/29 Encyclopedia: What is whooping cough for 100 days?

A: Pertussis is an acute respiratory infectious disease caused by Haemophilus pertussis. Because of stubborn cough and long course of disease, it is called whooping cough.

97 2003/06/30 Encyclopedia knowledge: Which mountain is Zhongyue among the five mountains?

98 2003/06/30 Answer: Songshan Mountain in Zhongyue. This mountain is 60 kilometers long and is located in Dengfeng, Henan Province. The main peak is steep, with an altitude of1492m. It is one of the five famous mountains in China and the first batch of national key scenic spots and national forest parks.

99 2003/07/0 1 Encyclopedia knowledge: In what month did the highest ocean temperature appear in China?

100 2003/07/0 1 Answer: In the northern hemisphere, the temperature in the middle and high latitudes is the highest in July and the lowest in 1 month; The temperature in the ocean is the highest in August and the lowest in February. Our country is in this range.

10 1 2003/07/02 encyclopedia knowledge: where is the folk song "in that distant place"

102 July/February, 2003 Answer: A Qinghai folk song "In that Far Away Place" made Wang famous both at home and abroad. This song and "Climbing the Mountain in Half a Moon" were selected as China music classics in the 20th century.

103 2003/07/03 encyclopedia knowledge: what are the animals commonly known as "four unlike"?

104 2003/07/03 answer: it's an elk, belonging to Artiodactyla, Cervidae, elk family, commonly known as "four elephants" Horn like deer, face like horse, hoof like ox, tail like donkey.

Encyclopedia knowledge: Which city is the famous Louvre Museum?

Answer: Paris. The Louvre was originally a castle, then a palace, and finally became a world-famous museum. Although the Louvre is only three or four stories high, it is really huge, with the length and width exceeding 120 meters.

107 2003/07/05 encyclopedia knowledge: which country is the city of music from?

108 2003/07/05 Answer: Vienna, the capital of Austria, is universally recognized as a city of music. Many famous European classical music works were born here, and many musicians such as Beethoven, Mozart and johann strauss lived here.

109 2003/07/06 encyclopedia knowledge: what's the name of the carnation?

1 10 2003/07/06 Answer: Carnation is also called carnation and carnation. This flower is a famous "Mother's Day" flower, which represents kind, warm, sincere and free maternal love.

1112003/07/07 Encyclopedia knowledge: What was the fuse of the May 4th Movement?

1 12 2003/07/07 Answer: 19 19 "May 4th Incident" was the whirlpool of the May 4th Movement, which was triggered by the Paris Peace Conference, which transferred Germany's "right" to occupy Shandong, China to Japan and refused to cancel the "Article 21" Treaty.

1 13 2003/07/08 encyclopedia knowledge: which minority dance is "Guo Zhuang"?

1 14 2003/07/08 Answer: Qiang people. Qiang nationality is an ancient minority in China, and now it is mainly distributed in Lixian, Wenchuan and Maoxian in Aba Prefecture, Sichuan Province. This nation has its own unique Qiangdi and Pot Zhuang Dance.

Encyclopedia knowledge: How did the plane take off?

Answer: Planes always take off and land against the wind. There are two main reasons for aircraft taking off and landing against the wind. First, it can shorten the taxiing distance of aircraft taking off or landing, and second, it is safer.

117 2003/07/10 Encyclopedia knowledge: The Yellow River bends eastward at Tongguan and passes through the canyon. What is the most famous landscape?

118 2003/07/10 Answer: Sanmenxia is the most famous landscape of the Yellow River. According to legend, Dayu cut the mountain into three canyons, namely "Manmen Gate", "Shenmen Gate" and "Ghost Gate", hence the name Sanmenxia.

119 2003/07/1encyclopedia knowledge: Where did the idiom "context" come from?

120 July 2003/11Answer: The idiom "context" is originally a geomantic superstition, which refers to the origin and destination of mountain context. Now refers to the cause and effect of things.

1212003/0712 encyclopedia knowledge: where is the best coffee produced in the world?

Answer: Jamaican Blue Mountain Coffee is the best coffee in the world. Real Blue Mountain Coffee has all the substances of coffee, which is rich and balanced, fruity and perfect in sour taste. It is the best in coffee.

123 July 2003/13 Encyclopedia knowledge: What are the advantages of Ursula in the "Three Treasures in Northeast China"?

124 July 2003/13 answer: "Guandong town, Sanzongbao, ginseng mink Ursula" is widely spread in Jingbo Lake in Northeast China, among which Ursula has the advantage of tough fiber. Another view of the three treasures is: Kanto City, Sanzongbao, Ginseng, Mink and Antler Horn.

125 2003/07/ 14 encyclopedia knowledge: which vitamin can be converted into calcium after being irradiated by the sun?

126 07 03/ 14 answer: vitamin D. within a certain range, the stronger the sunlight, the more vitamin D is synthesized. If the baby doesn't bask in the sun often, it will affect the synthesis of vitamin D and easily cause calcium deficiency.

127 2003/07/ 15 encyclopedia knowledge: which city is Longmen Grottoes, a scenic spot in China?

128 July 2003/15 answer: Longmen grottoes is located at 13 km south of Luoyang city, Henan province. Together with Dunhuang Grottoes in Gansu and Yungang Grottoes in Datong, Shanxi, it is called the Three Treasures of Ancient Buddhist Grottoes in China.

129 2003/07/ 16 encyclopedia knowledge: what role does the inner ear of crucian carp play besides hearing?

130 July 2003/16 Answer: Fish have no ears, but they still have inner ears. Besides hearing, the inner ear of crucian carp can also be used to balance the body.

1312003/0717 encyclopedia knowledge: where is Zhuge Liang's "office" Wuhou Temple?

132 2003/07/ 17 answer: Wuhou Temple in Chengdu, Sichuan Province is the ancestral hall in memory of Zhuge Liang, the prime minister of Shu Kingdom in the Three Kingdoms. Zhuge Liang was a marquis of Wuxiang before his death, and posthumous title was loyal to Wuhou after his death. Later generations respectfully called him Wuhou.

133 July 2003/18 encyclopedia knowledge: Who is the author of the Art of War?