Tell me how many parts the disciple rules are divided into.

Tell me how the disciple rules are divided into several parts. Disciples Rules, originally named Xun Mengwen, was written by Li Yuxiu, a scholar during the reign of Kangxi in the Qing Dynasty. Its content adopts the meaning of Article 6 of The Analects of Confucius, "Disciples are filial when they enter, and filial when they leave. They are sincere and believe that they love the public. If they are kind and have spare capacity, they will study the text. " Later, it was revised and adapted by Jia Cunren in Qing Dynasty and renamed Disciples Rules.

Disciple rules * * * have 360 sentences, 1080 words, three words and one sentence, two sentences and four sentences, which rhyme fluently; The whole article begins with a "general introduction", and then it is divided into seven parts: "Filial piety is when you enter, filial piety is when you leave, honesty is when you believe, love others, and kindness is when you spare no effort to learn literature".

What are the parts of this novel? Fiction can be roughly divided into beginning, development, climax and ending.

Part of the volume, the volume is divided into chapters and chapters.

What are the parts of Shaanxi Province? In 2006, Shaanxi Province established six provincial cities, namely xi, Baoji, Xianyang, Tongchuan, Weinan, Yan 'an, Yulin, Hanzhong, Ankang and Shangluo, and Yangling District 10. There are 3 county-level cities, 8 1 county and 23 municipal districts, 908 towns, 678 townships and 159 sub-district offices.

"Xi 'an" Chang 'an Huxian County-Lantian County-zhouzhi county-Lintong Yanliang Gaoling County

"Xianyang City" Sanyuan Jingyang-Xingping City-Gan County-Liquan County-Chunhua County-Changwu County

"Baoji City" Baoji City-Fengxiang County-Fan Qi Meixian Fufeng-Qianyang Longxian County-linyou county-Fengxian County-Taibai County

"Weinan City" Linwei District-Hancheng County-hua county-Dali County-pucheng county-huayin city Tongguan County-Baishui Chengcheng County-Heyang County-Fuping County

"Tongchuan City" Yaoxian-yijun county

"Shangluo City" Shangzhou District-Luonan County-Feng Dan-Shangnan County-Shanyang County-Zhen 'an County-Zhashui County

"Hanzhong City" Hantai Chenggu County-Xixiang County-Yangxian Foping County-Lueyang Mian County-zhenba county-Liuba County-Nanzheng County-ningqiang county

"Ankang City" Hanbin District-Shiquan Hanyin County-ningshan county-* * * County-Langao County-Pingli County-zhenping county-Xunyang Baihe County

What are the parts of the plane? Introduction to flight principle June14th 15:26 (1)

To understand the flight principle of aircraft, we must first know the composition and function of aircraft and how the lift of aircraft is generated. These problems will be briefly explained in several parts.

I. Main components and functions of flight

Up to now, except for a few special types of aircraft, most aircraft consist of five main parts: wing, fuselage, tail, landing gear and power plant:

1. Wing-The main function of the wing is to generate lift to support the flight of the aircraft in the air, and at the same time, it also plays a certain role in stability and operation. Generally, ailerons and flaps are installed on the wing. The aileron can make the plane roll, and lowering the flap can increase the lift. The engine, landing gear and fuel tank can also be installed on the wing. The shape and size of airplane wings are different for different purposes.

2. fuselage-the main function of fuselage is to load passengers, crew, weapons, goods and various equipment, and connect other parts of the aircraft, such as wings, tails and engines into a whole.

3. Tail wing-Tail wing includes horizontal tail wing and vertical tail wing. The horizontal tail consists of a fixed horizontal stabilizer and a movable elevator. Some high-speed aircraft combine horizontal stabilizer and elevator with full-motion horizontal tail. The vertical tail consists of a fixed vertical stabilizer and a movable rudder. The function of the tail wing is to control the pitch and deflection of the aircraft and ensure that the aircraft can fly smoothly.

4. Landing gear-The landing gear of an aircraft is mostly composed of shock-absorbing struts and wheels, which are used to support the aircraft during takeoff and landing, ground taxiing and parking.

5. Power plant-The power plant is mainly used to generate tension and thrust to make the plane move forward. Secondly, it can also provide power for other electrical equipment on the plane. At present, the widely used aircraft power devices are: aviation piston engine plus propeller, turbojet engine, turboprop engine and turbofan engine. In addition to the engine itself, the power plant also includes a series of systems to ensure the normal operation of the engine.

In addition to these five main parts, the aircraft is also equipped with various instruments, communication equipment, pilot equipment, safety equipment and other equipment according to the needs of aircraft operation and mission execution.

Second, the lift and drag of the aircraft.

An airplane is a kind of airplane heavier than air. When an airplane flies in the air, it will generate aerodynamic forces acting on the airplane, and the airplane flies by aerodynamic forces. Before understanding the generation of aircraft lift and drag, we should also understand the characteristics of airflow, that is, the basic laws of airflow. The flowing air is the airflow, which is a fluid. Here we will quote two fluid theorems: continuity theorem and Bernoulli theorem:

Theorem of fluid continuity: When the fluid continuously and stably flows through pipes with different thicknesses, the mass of the fluid flowing into any tangent plane is equal to the mass of the fluid flowing out from another tangent plane at the same time because no part of the fluid in the pipe can be interrupted or squeezed.

The continuity theorem expounds the relationship between the velocity of fluid in flow and the cross section of pipeline. In the flow of fluid, not only the velocity and pipe section are interrelated, but also the velocity and pressure are interrelated. Bernoulli theorem is to explain the relationship between velocity and pressure of fluid in flow.

The basic content of Bernoulli's theorem: when the fluid flows in the pipeline, the pressure at the high speed is low, and the pressure at the low speed is high.

Most of the lift of an aircraft is generated by the wings, and the tail usually generates negative lift, while the lift generated by other parts of the aircraft is very small, so it is generally not considered. From the above picture, we can see that the air flows to the leading edge of the wing and is divided into two streams, which flow along the upper and lower surfaces of the wing respectively and rejoin at the trailing edge of the wing to flow backward. The upper surface of the wing is relatively convex and the flow tube is relatively thin, indicating that the flow velocity is accelerated and the pressure is reduced. On the lower surface of the wing, the airflow is blocked, the flow tube becomes thicker, the flow velocity slows down and the pressure increases. Here we refer to the above two theorems. Therefore, there is a pressure difference between the upper and lower surfaces of the wing, and the sum of the pressure differences perpendicular to the relative airflow direction is the lift of the wing. In this way, the aircraft heavier than air overcomes its own gravity caused by the gravity of the earth by the lift force obtained from the wings, thus soaring in the blue sky.

The lift of the wing mainly depends on the suction of the upper surface, not the positive pressure of the lower surface. Generally, the suction formed on the upper surface of the wing accounts for about 60-80% of the total lift, and the lift formed by the positive pressure on the lower surface only accounts for about 20-40% of the total lift.

There will be all kinds of resistance when the plane flies in the air. Resistance is the aerodynamic force opposite to the direction of aircraft movement, which hinders the aircraft from moving forward. We also need to know about it here. According to the causes of resistance, it can be divided into friction resistance, pressure resistance, induced resistance and interference resistance.

1. Friction resistance-One of the physical characteristics of air is viscosity. When air flows over the plane surface, due to its viscosity, the air will rub against the plane surface, thus generating a force to stop the plane from moving forward. This force is frictional resistance. The magnitude of friction resistance depends on the viscosity of air, the surface condition of aircraft and the surface area of aircraft in contact with air. The greater the air viscosity, the rougher the aircraft surface, the larger the aircraft surface area and the greater the friction resistance.

2. Piezoresistance-When people walk against the wind, they will feel the effect of resistance, which is a kind of piezoresistance. The resistance formed by the pressure difference before and after is called piezoresistance. The fuselage, tail wing and other parts of the aircraft will produce pressure resistance.

3. Induced drag-When the lift force is generated, the aircraft is subjected to a drag force. This kind of resistance caused by lift is called induced resistance, which is a kind of "price" paid by aircraft to produce lift. Its production process is complicated, so I won't go into details here.

4. Interference resistance-it is the additional resistance caused by airflow interference between different parts of the aircraft. This kind of resistance is easily generated between fuselage and wing, fuselage and tail, wing and engine nacelle, wing and auxiliary fuel tank.

The above four kinds of resistance are aimed at low-speed aircraft. As for high-speed aircraft, in addition to these resistances, there will be other resistances such as wave resistance.

Three, the factors affecting the lift and drag

Lift and drag are produced in the relative motion between air (relative airflow). The basic factors that affect the lift and drag are: the relative position of the wing in the airflow (angle of attack), the speed and air density of the airflow, and the characteristics of the aircraft itself (surface quality of the aircraft, wing shape, wing area, whether the flap is used, whether the leading edge seam is opened, etc.). ).

1. The influence of angle of attack on lift and drag-the angle between the relative airflow direction and chord length is called angle of attack. The angle of attack at which the maximum lift is obtained at the same flight speed and other conditions is called critical angle of attack. When the angle of attack is less than the critical angle of attack, the lift increases; When the angle of attack is greater than the critical angle of attack, the lift decreases. With the increase of attack angle, the resistance increases, the attack angle increases and the resistance increases. When the critical angle of attack is exceeded, the resistance increases sharply.

2. The influence of flight speed and air density on lift resistance-the higher the flight speed, the greater the lift and resistance. Lift and drag are proportional to the square of flight speed, that is, the speed is doubled and the lift and drag are quadrupled; When the speed is tripled, the victory and resistance will increase ninefold. When the air density is high and the aerodynamic force is high, the lift and resistance are naturally high. When the air density is doubled, the lift and drag are also doubled, that is, the lift and drag are directly proportional to the air density.

3. The influence of wing area, shape and surface quality on lift and drag-large wing area, large lift and large drag. Lift and drag are proportional to the wing area. The wing shape has a great influence on the lift and drag, from the relative thickness of the wing section shape, the position of the maximum thickness, the plane shape of the wing, the position of the flap and the leading edge seam to the icing of the wing. Also, whether the plane surface is smooth or not will also affect the friction resistance. If the plane surface is smooth, the drag will be small, and vice versa.

What are the parts of a car? Usually, a car consists of four parts: engine, chassis, body and electrical equipment.

Engine, the function is to make the fuel supplied to it burn and generate power. Most cars are used for resurrection.

Plug internal combustion engine is generally composed of engine body, crank-connecting rod mechanism, valve train, supply system, cooling system, lubrication system, ignition system (used by gasoline engine) and starting system.

Chassis, receiving the power of the engine, makes the car move and ensures the car to run normally according to the driver's control. The chassis consists of the following parts:

Drive train-transmits the power of the engine to the driving wheels. The transmission system includes clutch, transmission, transmission shaft, drive axle and other components.

Drive system-connects all the assemblies and parts of the car into a whole, supports the whole car and ensures the normal running of the car. The drive system includes frame, front axle, drive axle housing, wheels (steering wheel and driving wheel), suspension and other components.

Steering system-ensures that the car can run in the direction selected by the driver, and consists of steering gear with steering wheel and steering transmission device.

Braking equipment-slow down or stop the car and ensure that the car can stop reliably after the driver leaves the area. The braking equipment of each vehicle includes several independent braking systems, and each braking system consists of an energy supply device, a control device, a transmission device and a brake.

The car body is the place where the driver works, and it is also the place where passengers and goods are loaded. The car body should not only provide convenient operating conditions for the driver, but also provide a comfortable and safe environment for the passengers or ensure that the goods are intact.

Electrical equipment includes power pack, engine starting system and ignition system, automobile lighting and signal device, etc. In addition, more and more electronic devices are installed in modern cars: microprocessors, central computer systems and various artificial intelligence devices.

Cars can be divided into body, frame, chassis and engine. A lot of subdivision.

What regions are Europe divided into? Europe is divided into five regions: Northern Europe, Southern Europe, Western Europe, Central Europe and Eastern Europe.

Northern Europe refers to jutland and Scandinavia. Include Iceland, Faroe Islands (Denmark), Denmark, Norway, Sweden and Finland. Area 1.32 million square kilometers. There are many plateaus, hills and lakes in the territory, which were all covered by glaciers during the Quaternary Glacier Period, so there are many glacial landforms and fjord coasts.

Southern Europe refers to the Balkan Peninsula, Apennine Peninsula, Iberian Peninsula and nearby islands south of the Alps, the Mediterranean and Black Sea facing the Atlantic Ocean in the south and east, and the Atlantic Ocean in the west. Including Serbia, Kosovo (unilaterally declared independence but not widely recognized by the international community), Montenegro, Croatia, Slovenia, Bosnia and Herzegovina, Macedonia, Romania, Bulgaria, Albania, Greece, Italy, Vatican, San Marino, Malta, Spain, Portugal and Andorra. Area 1.66 million square kilometers. The three peninsulas in southern Europe are mountainous and the plain area is very small. Located in the volcanic belt along the Atlantic-Mediterranean-Indian Ocean, there are many volcanoes and frequent earthquakes. Most areas belong to subtropical Mediterranean climate. Rivers are short, and most of them flow into the Mediterranean Sea.

In a narrow sense, Western Europe refers to the islands near the Atlantic Ocean and Western Europe, including Britain, Ireland, the Netherlands, Belgium, Luxembourg, France and Monaco. Western Europe covers an area of over 930,000 square kilometers. European capitalist countries are often called Western Europe, and rivers often flow into the Atlantic Ocean.

Central Europe refers to central Europe, south of the Baltic Sea and north of the Alps. Include Poland, Czech Republic, Slovakia, Hungary, Germany, Austria, Switzerland and Liechtenstein. Central Europe covers an area of 65,438+0,065,438+0,000 square kilometers. The south is occupied by the tall Alps and its branch Carpathian Mountains, where there are many subsidence basins. The northern part is plain, influenced by Quaternary glaciation, with many glacial landforms and lakes.

Eastern Europe refers to the eastern part of Europe, and geographically refers to the European part of Estonia, Latvia, Lithuania, Belarus, Ukraine, Moldova and Russia. The terrain is dominated by the Eastern European Plain, with an average elevation of170m. There are Ural Mountains on the eastern edge, hills and glaciers on the plain, many lakes in the north and a large area of grassland and desert in the southeast.

What parts does this letter consist of? Write the sender's address at the beginning of the message.

What are the cooking steps?

Vegetarian dishes:

1, drain oil

2. When the oil is hot, add onion, ginger and garlic and stir fry.

3. Put the dish and let the oil on the dish stick evenly.

4, put salt, and then turn well.

5.8 Add other necessary seasonings when it is ripe.

6. Add monosodium glutamate before cooking, and turn off the fire.

Meat and vegetables: (only two more processes)

1, shredded meat (or sliced and diced)

2. soak in soy sauce and cooking wine for a while.

3. Heat and stir-fry the oil until it is 6 or 7 ripe, and take it out for use.

4. After the fourth step, add the fried shredded pork or sliced meat and continue to stir fry.

5. Follow up as above.

What are the parts of fungi? Fungi are heterotrophs with eukaryotes and cell walls. Except for a few lower types of single cells, most of its vegetative bodies are composed of slender tubular mycelium. The hyphae of lower fungi have no septa, while those of higher fungi have septa. The former is called partition, and the latter is called partition. In the cell walls of most fungi, chitin is the most characteristic, followed by cellulose. Common fungal organelles are: nucleus, mitochondria, microbodies, ribosomes, vacuoles, lysosomes, vesicles, endoplasmic reticulum, microtubules, flagella and so on. Common inclusion bodies are glycogen, crystals, liposomes and so on.