How to Adjust the Rearview Mirrors for Subject 2 Driving Test?

Why is it still hot in the car with the air conditioning on?

If the car still feels hot with the air conditioning on, it may be because the temperature is set in the red indicator zone, causing the air conditioning to heat. Only by setting the temperature at the far end of the blue indicator zone can you achieve good cooling. Another possible reason could be issues with the compressor or radiator in the air conditioning system, or a lack of refrigerant. Car air conditioning refers to the air conditioning device installed in a vehicle, which can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety. The air conditioning system has become one of the indicators for evaluating whether a car is fully equipped.

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What does the AC button on a car mean?

The AC button in a car is the switch for the air conditioning cooling system. Pressing the AC button will gradually lower the temperature inside the vehicle. The car air conditioning refrigeration system consists of a compressor, condenser, receiver-drier, expansion valve, evaporator, and blower, among other components. These parts are connected by copper pipes and high-pressure rubber hoses to form a sealed system. The basic process of car air conditioning refrigeration is as follows: 1. Compression process: The compressor draws in low-temperature, low-pressure refrigerant gas from the evaporator outlet and compresses it into high-temperature, high-pressure gas, which is then discharged from the compressor. 2. Heat dissipation process: The high-temperature, high-pressure superheated refrigerant gas enters the condenser. Due to the reduction in pressure and temperature, the refrigerant gas condenses into a liquid, releasing a significant amount of heat. 3. Throttling process: The higher-temperature and higher-pressure refrigerant liquid passes through the expansion device, causing its volume to increase and its pressure and temperature to drop sharply, exiting the expansion device as a mist (fine droplets). 4. Heat absorption process: The mist-like refrigerant liquid enters the evaporator. Since the boiling point of the refrigerant is much lower than the temperature inside the evaporator, the refrigerant liquid evaporates into a gas. During the evaporation process, it absorbs a large amount of heat from the surroundings, and the resulting low-temperature, low-pressure refrigerant vapor re-enters the compressor. This cycle repeats continuously to achieve the purpose of lowering the temperature of the air around the evaporator.

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What are the Five Fixations of a Rescue Vehicle?

Here are the detailed explanations of the five fixations for a rescue vehicle: 1. Fixed-time verification: Check the quantity and quality, then sign and record. 2. Regular disinfection: Keep all items on the rescue vehicle clean, dry, and in good condition for immediate use. 3. Fixed placement: Ensure all rescue items and medications are stored in designated locations for immediate access and supply. 4. Fixed personnel in charge: The rescue vehicle must be managed by designated personnel in specific areas, with clear responsibilities assigned. Weekly inventory checks and dedicated records are required. 5. Fixed-quantity supply: Items on the rescue vehicle, especially medications, must not be supplied without limits. There must be controlled quantities and quality, ensuring fixed and customized supply, with effective records maintained before and after supply.

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Is Car Coating or Waxing Better?

Both car coating and waxing are methods to protect the paint surface. Coating is an enhanced version of waxing and offers better protection, but it is more expensive than waxing. Here are several advantages of car coating: 1. Scratch Resistance: The hardness of diamond crystal reaches 6H, compared to the 2H hardness of ordinary car paint. It can prevent most minor scratches and has an elastic recovery function, protecting the vehicle from daily minor scratches and reducing paint surface scratches by more than 70% compared to general coatings. 2. Corrosion Resistance: The ultra-fine nano-crystal layer of diamond crystal isolates the paint surface from the external environment, effectively preventing oxidation and resisting corrosion from bird droppings, insect residues, acid rain, etc. 3. No Cracking: Diamond crystal is resistant to UV rays, high temperatures, and extreme cold, with a temperature tolerance range of -50°C to 300°C. It can adapt to a wide range of temperature changes without cracking or peeling. 4. Easy Cleaning: The strong fiber network of diamond crystal fills the invisible tiny pores on the car's paint surface, achieving a mirror-like finish, making the car body easier to clean and maintain. 5. Anti-Static: The diamond crystal in car coating contains anti-static agents, making the paint surface less likely to attract dust and preventing "traffic film." 6. Enhanced Brightness: Diamond crystal has a crystal structure similar to that of a diamond, increasing light refraction and making the car surface brighter. The paint surface appears crystal clear and radiant, with a brightness level of over 95%.

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How high is a car's exhaust pipe from the ground?

Car exhaust pipes are typically 15 to 25 cm from the ground. Below are specific details about car exhaust pipes: 1. Definition: The car exhaust bellows, also known as the car exhaust flexible pipe, is installed between the engine exhaust manifold and the muffler in the exhaust pipe. It provides a flexible connection for the entire exhaust system, thereby reducing vibration and noise, facilitating installation, and extending the lifespan of the exhaust muffler system. 2. Structure: It is mainly used in light vehicles, micro vehicles, and buses. Its structure consists of a double-layer bellows covered with a steel wire mesh sleeve, with clamping rings on both straight sections. To enhance noise reduction, the bellows may include an expansion joint or mesh sleeve inside. The primary material is stainless steel SUS304, while the clamps and connecting pipes can be made of stainless steel or aluminized steel.

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Is it necessary to tint car windows?

It is necessary to tint car windows. Here are the specific instructions regarding car window tinting: 1. Precautions after tinting: Do not open the sunroof within three days, especially when driving at high speeds; avoid rolling down the windows within three days after tinting; if bubbles appear at the edges of the film, they should be repaired at the installation site within 24 hours. If this time is exceeded, the edges of the film cannot be adjusted because the adhesive around the bubbles will have dried, which will inevitably cause wrinkles during the repair process; do not wash the car within three days. 2. Misconception: The darker the film color, the better the heat insulation performance is not true. The infrared blocking capability of the film is not related to its color but depends on the reflective effect of the metal or oxide sputtered layer. Currently, the best reflective technologies in films are the indium-silver oxide sputtered layer and the indium-zinc oxide coating, both of which can achieve over 90% infrared blocking rate.

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How to Adjust the Rearview Mirrors for Subject 2 Driving Test?

Why is it still hot in the car with the air conditioning on?

What does the AC button on a car mean?

What are the Five Fixations of a Rescue Vehicle?

Is Car Coating or Waxing Better?

How high is a car's exhaust pipe from the ground?

Is it necessary to tint car windows?

What Causes the Car Radar to Not Sound?

Is the Audi A6L compliant with China V or China VI emission standards?

What is the Structure and Principle of an Automobile Engine?

Which Car Brand Has a V-Shaped Logo?