Which is More Difficult, Subject One or Subject Four?

Is Defrosting in a Car Done with Cold or Hot Air?

Defrosting in a car is done with hot air. For the front windshield, fog is removed using cold air, while frost is removed using hot air. For the rear windshield, both defrosting and defogging are done using electric heating. The rear windshield has visible heating wires. It's important to note that you should not use snow scrapers, cloth, cards, or other tools to scrape frost off the glass. In winter, the wind is strong, and frost often contains fine dust particles. Using tools to scrape frost is equivalent to sanding the glass with fine sandpaper. If the front windshield fogs up, it's usually due to the large temperature difference between the inside and outside of the car. Water vapor easily condenses on the cold windshield, forming a layer of fog. The solution is to turn on the cold air, which will quickly dissipate the fog.

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Is Valve Cover Oil Leak Serious?

The valve cover oil leak is serious as the sealing components shrink, harden, and lose elasticity, with severe cases even leading to fractures. It is recommended to inspect the cause of the oil leak and proceed with repairs. The primary function of the valve cover gasket is to seal and prevent oil leakage. Most sealing gaskets are made of rubber, which can age and harden over prolonged vehicle use, resulting in oil leaks. The main causes of valve cover oil leaks include: uneven screw pressure during assembly, deformation of the valve cover, aging of the valve cover gasket, blockage of the crankcase forced ventilation valve, and poor-quality sealing rings or sealant. Since the valve cover is located at the top of the engine, oil leaking from the valve cover gasket will flow down along the cylinder head. Due to the high operating temperature of the engine, the oil adhering to the engine surface will gradually evaporate, producing pungent fumes.

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What Causes the Engine to Not Accelerate After Starting?

The reasons why the engine does not accelerate after starting are: 1. Clogged fuel lines, causing poor acceleration; 2. Issues with the fuel filter, preventing it from functioning properly; 3. Bent fuel pipes, leading to insufficient fuel supply during acceleration. Solutions: 1. Check whether the fuel pump is working properly. Remove the fuel pump for inspection. If a large amount of impurities is found in the fuel pump, they need to be cleaned promptly; 2. Check whether the car battery has sufficient charge. If the battery is low on power, it may result in unstable voltage output, which can also cause car malfunctions. If the issue cannot be resolved, it is recommended to visit a professional repair shop or a 4S store for further assistance.

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What does Hill Start Assist mean in a car?

Hill Start Assist in a car applies braking force to all four wheels to prevent the vehicle from rolling backward. This function activates when the vehicle is stationary and the driver further depresses the brake pedal. The Hill Start Assist System is a feature derived from the ESP system, allowing the vehicle to start on an incline without using the handbrake and preventing rollback. Even when the driver's right foot leaves the brake pedal, the vehicle can maintain braking for a few seconds. The HAC (Hill-start Assist Control) works by automatically maintaining brake hydraulic pressure for 2 to 3 seconds when the vehicle is on an uphill slope, precisely at the moment the driver moves their foot from the brake pedal to the accelerator. This prevents the vehicle from rolling backward due to gravity and inertia.

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Is the 156 horsepower of the BMW 320 sufficient?

Here is an explanation of whether the 156 horsepower of the BMW 320 is sufficient: 1. For family use: The BMW 320 is equipped with a 2.0T engine paired with an 8-speed automatic transmission, delivering a maximum of 156 horsepower. Overall, the power is completely sufficient for family use. 2. For sporty driving: If you're looking for sporty performance, it may not be enough. Below is additional information about the BMW 320: 1. Exterior: The rear design is as dynamic as the front, with blackened taillights and dual exhaust pipes on both sides highlighting its sporty character. The lower rear section is also adorned with black triangular accents, making the overall exterior appearance very impressive. 2. Interior: The interior emphasizes its luxurious atmosphere. Upon entering the car, you can immediately feel its luxury, with both materials and craftsmanship meeting the standards of a premium vehicle. The dashboard features a digital instrument cluster and a floating central control screen, effectively showcasing a sense of technology.

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What are the tips for reversing into the garage in Subject 2?

Reversing into the garage operation tips: After getting into the car, the driver should first adjust the seat and rearview mirrors, fasten the seat belt, then shift the car into reverse gear, release the parking brake lever, and start reversing at idle speed. The driver observes the garage through the right rear window. When the black edge of the right rear window aligns with the right boundary line of the garage, turn the steering wheel smoothly to the right to the limit position. After the car enters the garage, the driver should look back at the left rearview mirror. When the entire left boundary line of the garage appears, immediately straighten the steering wheel. When the left door handle is level with the bottom line of the garage as seen in the left rearview mirror, stop immediately. Deduction items for reversing into the garage are as follows: Not following the prescribed route or sequence, deduct 100 points; vehicle body crossing the line, deduct 100 points; failing to reverse into the garage, deduct 100 points; stopping midway, deduct 100 points. Subject 2 has a full score of 100 points, with evaluation standards set for failing, deducting 20 points, deducting 10 points, and deducting 5 points. The test is passed if the following conditions are met: ① For large passenger cars, tractors, city buses, medium passenger cars, and large trucks, a score of 90 or above is required; ② For other vehicle types, a score of 80 or above is required.

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Which is More Difficult, Subject One or Subject Four?

Is Defrosting in a Car Done with Cold or Hot Air?

Is Valve Cover Oil Leak Serious?

What Causes the Engine to Not Accelerate After Starting?

What does Hill Start Assist mean in a car?

Is the 156 horsepower of the BMW 320 sufficient?

What are the tips for reversing into the garage in Subject 2?

How to Repair a Scratched Tire?

What is the purpose of tire oil?

What is the solution when the interior lights of the Magotan remain on?

What is a Grille?