How to Start a Vehicle in Subject 2 of the Driving Test?

What Does a Gasoline Engine Inhale During the Intake Stroke?

During the intake stroke, a gasoline engine inhales gasoline. Here are the relevant details: 1. Air-fuel mixture: Diesel engines inhale pure air during the intake stroke. Near the end of the compression stroke, diesel fuel is pressurized to over 10 MPa by the fuel injection pump and then injected into the cylinder through the fuel injector. It quickly mixes with the high-temperature compressed air to form a combustible mixture. 2. Air pressure: Due to the high compression ratio of diesel engines (typically 16-22), the air pressure in the cylinder at the end of compression can reach 3.5-4.5 MPa, with temperatures as high as 750-1000 K (while the air-fuel mixture pressure in gasoline engines at this stage is 0.6-1.2 MPa, with temperatures reaching 600-700 K), significantly exceeding the autoignition temperature of diesel fuel.

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How to Close a Car Trunk?

Methods for closing a car trunk are as follows: 1. For ordinary models, turn the key to the right to open. 2. For luxury models, there are two ways to open: 1) One is to use the key to open. 2) The other is to use the rear cover electromagnetic opening button, usually located below the dashboard or on the left side of the driver's seat, marked with a rear cover opening symbol. When closing, no key is needed; just ensure it is tightly shut. Additional information: The car trunk serves as the vehicle's storage compartment. A car trunk mat can effectively protect the trunk, preventing dirt or liquids from entering and eroding the trunk surface, and also preventing items inside the trunk from sliding. The car trunk reduces the likelihood of the interior being contaminated or damaged, as cleaning the trunk mat is more convenient and economical than cleaning the interior.

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Why doesn't my 12123 show the option for license renewal upon expiration?

It might be due to the physical examination requirement. For driver's license renewal upon expiration, a physical examination must be completed before applying. Below are specific details regarding expired motor vehicle driver's licenses: 1. Renewal within one year of expiration: According to the 'Regulations on the Application and Use of Motor Vehicle Driver's Licenses,' if the renewal or physical examination deadline is exceeded by less than one year, the license is considered overdue but not yet invalid. The driver can submit their ID card, expired driver's license, and a medical certificate from a county-level or higher medical institution (or a military medical institution at the regiment level or above) to the vehicle management office to process the renewal without taking any subject exams. 2. Renewal between one and three years of expiration: The driver must take the subject one exam at the vehicle management office. Upon passing the exam, they can proceed with the normal renewal process.

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How Heavy is a Car Battery?

Car batteries come in various types, and their weights differ based on capacity. For example: 1.5Ah (Ah stands for ampere-hour, the unit of battery capacity), 12.5Kg (approximately 8.5Kg when not filled with electrolyte); 55Ah, 15.0Kg; 60Ah, 17.5Kg (approximately 12Kg when not filled with electrolyte); 70Ah, 18.0Kg; 80Ah, 20.0Kg (approximately 14.5Kg when not filled with electrolyte); 110Ah, 24.5Kg. Here's an extended introduction: Car Battery: Also known as a storage battery, it is a type of battery that works by converting chemical energy into electrical energy. Typically, when people refer to a car battery, they mean a lead-acid battery. This is a type of battery primarily made of lead and its oxides, with sulfuric acid solution as the electrolyte.

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Types and Functions of Car Window Films

There are four main types of car window films: coated and composite process films, dyed films, vacuum thermal evaporation films, and metal magnetron sputtering films. The functions of each type are as follows: 1. Coated and composite process films: Their primary function is to block intense sunlight. These films are early-stage products and basically do not provide heat insulation. They were initially called sun paper or tea paper. 2. Dyed films: Most dyed car films on the market use deep-dyeing technology, which involves adding heat absorbers through deep-dyeing to absorb infrared rays from sunlight for heat insulation. However, since they also absorb visible light, the visible light transmittance is insufficient, and their clarity is poor due to technological limitations. Another major weakness is that their heat insulation function degrades quickly, and they are prone to fading, though they are relatively cheaper. 3. Vacuum thermal evaporation films: These use vacuum thermal evaporation technology to evaporate an aluminum layer onto the substrate for heat insulation. These are typically referred to as metal films, offering long-lasting heat insulation. However, their clarity is not high, affecting visual comfort, and another major drawback is their high reflectivity. 4. Metal magnetron sputtering films: As of 2018, these represent the highest technology in glass films, developed in the late 1990s after multiple technological innovations. The magnetron sputtering process involves using advanced multi-chamber high-speed rotating equipment to uniformly sputter high-grade aerospace alloy materials like nickel, silver, titanium, and gold onto high-tension PET substrates with high speed and force, based on electric and magnetic field principles. Products made with magnetron sputtering technology not only have excellent metallic texture and stable heat insulation performance but also achieve clarity, low reflectivity, and long-lasting color that other processes cannot match.

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Will the car floor rust if it gets wet?

Yes, it will rust. Introduction to the effects of water entering the car floor: 1. Vehicle rust and corrosion: Water entering the vehicle will corrode the floor and metal components, causing floor damage and metal parts to rust, significantly increasing the probability of vehicle failure and threatening the safety of the driver. 2. Vehicle circuit short circuit: If the water in the vehicle is not treated in time, the accumulated water may cause short circuits in some circuits on the floor. When starting the vehicle, it is easy to affect the normal driving of the vehicle due to the short circuit, and even burn out the vehicle's computer, causing vehicle failure. 3. Vehicle odor: If the water is not removed and dried in time after entering the vehicle, the remaining water will corrode the vehicle floor and cause the floor mats to mold and deteriorate, which will emit unpleasant odors and create vehicle odor.

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How to Start a Vehicle in Subject 2 of the Driving Test?

What Does a Gasoline Engine Inhale During the Intake Stroke?

How to Close a Car Trunk?

Why doesn't my 12123 show the option for license renewal upon expiration?

How Heavy is a Car Battery?

Types and Functions of Car Window Films

Will the car floor rust if it gets wet?

Can drivers renew their driver's license on the Traffic Management 12123 platform?

Why is there such a big difference in gas prices at gas stations?

What is the filter screen in front of the car fan?

What is the fuel consumption of the Ford Mondeo Zhisheng 2.3?