What are the methods for answering single-choice questions in Subject 1?

What are the components of an engine?

An engine is composed of two major mechanisms and five major systems. The two major mechanisms are the valve train and the crankshaft connecting rod mechanism. The five major systems are the ignition system, cooling system, lubrication system, starting system, and fuel supply system. The following are detailed introductions: 1. Valve train: The engine valve train (internal combustion engine valve train) opens and closes the intake and exhaust valves of each cylinder in a timely manner according to the working cycle and ignition sequence requirements of each cylinder in the engine, allowing fresh combustible mixture (gasoline engine) or air (diesel engine) to enter the cylinder in time and exhaust gas to be discharged from the cylinder in time. During the compression and power strokes, the valves are closed to ensure the sealing of the combustion chamber. 2. Crankshaft connecting rod mechanism: The crankshaft connecting rod mechanism (crank-train) is the main moving mechanism of the engine. Its function is to convert the reciprocating motion of the piston into the rotational motion of the crankshaft, while converting the force acting on the piston into the torque output by the crankshaft to drive the car wheels. The crankshaft connecting rod mechanism is composed of piston group, connecting rod group, crankshaft, flywheel group and other components. 3. Ignition system: The ignition system is an important part of the gasoline engine. The performance of the ignition system has a great impact on the engine's power, fuel consumption and exhaust pollution. All the equipment that can generate an electric spark between the two electrodes of the spark plug is called the engine "ignition system". It is usually composed of a battery, generator, distributor, ignition coil and spark plug. 4. Cooling system: The cooling system keeps the engine within the appropriate temperature range under all operating conditions. The cooling system must prevent the engine from overheating and also prevent the engine from overcooling in winter. 5. Lubrication system: The so-called lubrication system refers to the general term for a series of oil supply, oil discharge and their auxiliary devices that supply lubricant to the lubrication parts. The lubrication system can be divided into five types, namely, circulating lubrication system, centralized lubrication system, spray lubrication system, immersion and splash lubrication system, and total loss lubrication system of oil and grease. 6. Starting system: To transition the engine from a stationary state to a working state, it is necessary to first use external force to rotate the engine's crankshaft, so that the piston makes reciprocating motion, the combustible mixture in the cylinder burns and expands to do work, pushing the piston downward to rotate the crankshaft. Only then can the engine run on its own, and the working cycle can proceed automatically. Therefore, the entire process from the rotation of the crankshaft under external force to the engine starting to idle automatically is called the starting of the engine. 7. Fuel supply system: The task of the gasoline engine fuel supply system is to prepare a certain amount and concentration of combustible mixture according to the requirements of various operating conditions of the engine, supply it to the cylinder, and make it ignite and burn near the end of compression to expand and do work. Finally, the supply system should also discharge the combustion product - exhaust gas into the atmosphere.

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How to reset the maintenance light on a Jeep Renegade?

First, turn off the car; then press and hold the trip meter reset button until the "SERVICE" message appears on the display. After that, turn off the engine, and the system will prompt a reset. Finally, turn the ignition button, and the reset will be completed automatically. Below is some additional information about the Bestune T77: 1. The Bestune T77 currently has 20 models available for sale, featuring a 1.2T engine with two transmission options: dual-clutch and manual. It delivers a maximum horsepower of 143 PS and a peak torque of 204.0 N·m. 2. The Bestune T77 is equipped with a golden powertrain that balances high performance and fuel efficiency, enabling smooth driving across all road conditions. Its MacPherson independent suspension ensures excellent handling stability and improves ride comfort. 3. The wet dual-clutch transmission is lightweight, precise, and operates smoothly with low noise. It offers superior handling performance, providing a comfortable driving experience and outstanding fuel economy.

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What Causes the Cruze Electric Fan to Run Continuously?

Causes for the Cruze electric fan running continuously: 1. There is no issue with the car's cooling system, but the air conditioning was not turned off during the last shutdown. When the car is started again, the air conditioning system activates, causing the fan to run to facilitate the condenser's operation; 2. A malfunctioning water temperature sensor prevents the engine's computer from detecting the water temperature signal, leading the engine to enter a fault mode. The Cruze is a compact sedan produced by Chevrolet, with dimensions of 4598 mm in length, 1797 mm in width, and 1477 mm in height, and a wheelbase of 2685 mm. The Cruze incorporates the contemporary fashion concept of mix-and-match in its exterior and interior design, utilizing a blend of different materials and styles to create a new three-dimensional sculpture concept on the exterior and a unique sporty dual-cockpit style in the interior.

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What car has the character 'Song' on it?

The car with the character 'Song' is the BYD Song, which can be considered the dual-mode version of the BYD S3, positioned as a new energy compact car. The BYD Song is equipped with a hybrid system consisting of a 1.5T engine and two electric motors, with one motor located on the front axle and the other on the rear axle, enabling four-wheel drive functionality. In terms of interior design, the BYD Song features some diagonal lines and chrome accents, creating a dynamic atmosphere. The steering wheel at the bottom is marked with a red 'Song' character, highlighting the car's identity. In terms of configuration, some models of the BYD Song come equipped with a panoramic imaging system, a large multimedia screen, a multifunction steering wheel, an electronic parking brake, automatic air conditioning, and other features.

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How to Open the Fuel Tank Cap of Chery Tiggo 8?

Method to open the fuel tank cap of Chery Tiggo 8: The fuel tank cap of the Tiggo 8 is of the push-type. When the vehicle is unlocked, simply press the fuel tank cap directly to open it. The Chery Tiggo 8 is a mid-size SUV under the Chery brand, with dimensions of 4700 mm in length, 1860 mm in width, and 1746 mm in height, and a wheelbase of 2710 mm. In terms of power, the Chery Tiggo 8 is equipped with a turbocharged engine, delivering a maximum horsepower of 156 hp, a maximum torque of 230 Nm, and a maximum power output of 115 kW. The engine reaches its maximum power at 5500 rpm, and the maximum torque is achieved between 1750 rpm and 4000 rpm.

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How many liters of engine oil should be added to an Audi Q5?

The recommended engine oil capacity for an Audi Q5 is 4.6 liters. The original factory oil for Audi is SM-grade synthetic oil. If you want to change the oil during later maintenance, you can choose brands such as Shell, Mobil, Castrol, or Total. The recommended oil specification for the Audi Q5 in the manual is 5W-40. Any oil model that meets this specification can be used. The viscosity of engine oil changes with temperature, so special attention should be paid to its performance under both low and high temperatures. For example, in 5W-30, the first number indicates low-temperature fluidity. 5W means it can withstand low temperatures of -30°C. The smaller this number, the better the low-temperature fluidity, and the smoother the cold start of the car will be. The second number represents the kinematic viscosity of the oil at 100°C. The higher the number, the better the oil can maintain its viscosity index at high temperatures, which can also be understood as better lubrication performance under high-temperature conditions. The method for changing the oil in an Audi Q5 is as follows: Wait for the engine temperature to drop, and also allow the oil to flow back into the oil pan; Use a wrench to loosen the oil drain plug and place an oil pan to catch the old oil until no more oil flows out. Start the engine and let it run for 30 seconds to allow the oil in the main oil passage to drain; Use a special wrench to remove the oil filter; Apply oil to the seal of the new oil filter and tighten it clockwise by hand; Add the new oil through the oil filler cap on the engine valve cover. Generally, fill up to three-quarters of a standard oil container; Start the engine and let it run for 5 minutes. Check for any leaks around the oil drain plug and oil filter. If there are leaks, perform necessary repairs; After stopping the engine, pull out the oil dipstick and check that the engine oil level is within the standard range.

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What are the methods for answering single-choice questions in Subject 1?

What are the components of an engine?

How to reset the maintenance light on a Jeep Renegade?

What Causes the Cruze Electric Fan to Run Continuously?

What car has the character 'Song' on it?

How to Open the Fuel Tank Cap of Chery Tiggo 8?

How many liters of engine oil should be added to an Audi Q5?

What to do when the cigarette lighter in Trumpchi GS4 has no power?

How to reset the bulb fault light on the Sagitar?

What Causes Volkswagen Key Remote Control Failure?

Does the 2019 CR-V still have the oil dilution issue?