What are the requirements for a B2 driver's license?

Can a leaking car battery cause spontaneous combustion?

Yes, a leaking car battery can cause spontaneous combustion. When a car battery leaks, it results in reduced acid levels inside the battery, leading to higher internal resistance during charging and discharging. This generates more heat, which increases the float charge current. The battery's expansion raises the temperature further, eventually causing thermal runaway and spontaneous combustion. Causes of battery leakage: Poor sealing between the upper cover and the base tray can lead to cracks, while leakage from the safety valve or wiring connections can also cause battery fluid to escape. Solutions: Inspect the battery's exterior for any cracks. Plastic welding can be used to repair leaks, along with adding an appropriate amount of sulfuric acid and distilled water. Check the safety valve for signs of leakage—if found, repair or replace the valve. If the battery case is severely damaged and most of the electrolyte has leaked, replacement is the best option. Maintenance tips for car batteries: Before turning off the engine, ensure all electrical devices are switched off. Avoid long-term parking; start the vehicle at least once a week to maintain optimal battery voltage. Regularly clean the car battery. Over time, dust, white powder, and stains can accumulate on the battery, potentially shortening its lifespan. Use a damp cloth to clean and wipe the battery periodically, keeping its exterior as clean as possible.

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What are the symptoms of a bent connecting rod in a car?

Symptoms of a bent connecting rod in a car include unstable idling accompanied by shaking and vibration after the engine starts, as well as piston misalignment. Here are the reasons for a bent connecting rod in a car: Water entering the engine cylinder: Water entering the engine cylinder (combustion chamber) can cause the connecting rod to bend or break. When a vehicle is driven on roads with accumulated water, the engine may suck water into the cylinder. The water initially entering the cylinder quickly forms a water-gas mixture under the high temperature of the cylinder block, making it impossible to form a combustible mixture in that cylinder. As more water enters, it accumulates on top of the piston, reducing the effective volume of the combustion chamber, increasing compression resistance, and raising the pressure transmitted from the piston to the connecting rod, ultimately leading to a bent connecting rod. Abnormal engine fuel injection system: An abnormal engine fuel injection system can cause the connecting rod to bend or break. When a cylinder's injector continuously sprays fuel, symptoms such as difficulty starting, unstable idling, black smoke from the exhaust pipe, and reduced power often occur. Abnormal fuel injection can also result in a bent connecting rod.

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What are the symbols for low beam and high beam?

The high beam symbol is a horizontal lampshade with five parallel horizontal lines in front, while the low beam symbol is a horizontal lampshade with five parallel diagonal lines in front. Typically, the high beam icon emits blue light when activated, and the low beam icon emits green light when activated. Below is relevant information about when to use high beams: 1. When driving on roads with poor lighting conditions, to avoid affecting oncoming vehicles, high beams can be used alternately with low beams, and should be immediately switched when encountering oncoming traffic. 2. If you notice frequent light flashes from oncoming vehicles, check whether your high beams are unintentionally activated. 3. When overtaking at night, alternate between high and low beams to alert the vehicle ahead. 4. Use high beams on roads without streetlights or with poor illumination at night, but switch to low beams when approaching oncoming traffic within 150 meters or vehicles in the same direction within 100 meters. Also use low beams when overtaking. 5. On sparsely populated roads, when passing corners, curves, or intersections without traffic signals, reduce speed and alternately use high and low beams as a warning.

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Does Airbag Deployment Count as a Major Accident?

Airbag deployment is considered a major accident. The airbag is a one-time-use active safety device that cannot be reused once deployed. In the used car market, if a vehicle has experienced a significant collision resulting in airbag deployment, it can be classified as having been in an accident, leading to a depreciation in its value. The deployment referred to here is the normal activation upon impact, not due to design defects or malfunctions of the airbag itself. Although airbags cannot be reused, they can be repaired or replaced. Here is additional information: 1. Composition of Airbags: The automotive airbag system consists of four parts: impact sensors, the airbag ECU, the inflation system, and the airbag itself. 2. Replacement of Airbags: After an accident, not only the deployed airbag needs to be replaced, but the airbag ECU must also be replaced. Most collision accidents do not damage the airbag ECU, but the ECU stores a record of the airbag deployment, which cannot be erased through conventional methods, hence the need to replace the airbag ECU as well.

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Who is responsible for a car accident during Subject Three test?

During Subject Three driving practice or examination, if a car accident occurs, the student is not held responsible. Full responsibility lies with the driving instructor or examiner. Legal basis: Article 20 of the "Regulations for the Implementation of the Road Traffic Safety Law" states that if a student violates traffic safety regulations or causes a traffic accident during driving practice, the instructor shall bear the responsibility. Rules for liability division in Subject Three traffic accidents: When the student and instructor are driving normally and the accident is caused by the other party's fault or violation of traffic rules, the other party bears full responsibility. If the accident results from operational errors by the student or instructor during driving, the responsibility falls on the training vehicle. However, since the student does not possess a driver's license, the instructor or safety officer assumes liability. Precautions for Subject Three: Avoid rapid movements of the control lever to prevent the system from failing to detect signals. After activating the turn signal, hold it to prevent it from turning off due to steering wheel movement. Stay calm during gear shifts to avoid incorrect gear selection. Fully depress the clutch pedal; otherwise, shifting will be difficult, and nervousness may lead to stalling. Keep your gaze focused ahead, using reference points instead of fixating on the front of the engine compartment. If the vehicle tilts, make minor steering adjustments rather than large turns of the steering wheel.

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Can Flood-Damaged Cars Be Sold?

Flood-damaged cars can be sold. Currently, there are no explicit national regulations prohibiting the sale of flood-damaged vehicles. As long as the flood-damaged car still has repair value, it can enter the used car market after being repaired and inspected. Risks of flood-damaged cars: A flood-damaged car refers to a vehicle that has been submerged in water, typically meaning the engine and transmission have been waterlogged, with the water level exceeding the wheels and seats, and the vehicle's underbody components being in prolonged contact with water. The risk factor is very high, as the electrical circuits are prone to short circuits and fire hazards. While flood-damaged cars can be repaired to some extent, even after repairs, they still pose serious hidden dangers. The longer the vehicle has been submerged, the higher the likelihood of malfunctions, and they cannot be completely restored. Precautions for trading flood-damaged cars: If a seller wants to sell a flood-damaged car, they should first repair the vehicle as thoroughly as possible to avoid leaving safety hazards. Secondly, they must truthfully inform the buyer of the actual condition to avoid being sued for contract fraud. Finally, both parties can negotiate the price and complete the transfer. As a buyer, when purchasing a car, you can check the extent of corrosion and rust on the chassis, look for residual mud in the seat rails and floor gaps inside the cabin, and examine the engine's inner firewall for signs of water damage. These methods can help determine whether the vehicle is a flood-damaged car.

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What are the requirements for a B2 driver's license?

Can a leaking car battery cause spontaneous combustion?

What are the symptoms of a bent connecting rod in a car?

What are the symbols for low beam and high beam?

Does Airbag Deployment Count as a Major Accident?

Who is responsible for a car accident during Subject Three test?

Can Flood-Damaged Cars Be Sold?

Is It Useful to Call the Police If My Car's Tires Are Deflated?

Are the engines of Roewe and MG the same?

What Material Are Car Wheels Made Of?

What Causes the Low-Pressure Pipe of a Car Air Conditioner to Freeze and Stop Cooling?