Can Water Be Used to Extinguish a Tire Fire?

How long is the validity period for Subject 1?

According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses," the validity period of the study driving certificate after passing Subject 1 is three years, but the expiration date must not exceed the upper age limit for application. Applicants must complete Subject 2 and Subject 3 exams within the validity period. If the exams are not completed within the validity period, the passed subject results will be invalidated. Subject 1, also known as the theoretical exam or driver's theory test, is part of the motor vehicle driver's license assessment. The exam content includes driving theory basics, road safety laws and regulations, local regulations, and related knowledge. The exam format is computer-based with a time limit of 45 minutes. Subject 1 consists of 100 single-choice and true/false questions, each worth 1 point. If 11 questions are answered incorrectly, the system will automatically submit the exam and end the test. Subject 1 exam content: Regulations on driver's licenses and motor vehicle management; Road traffic conditions and regulations; Road traffic safety violations and penalties; Road traffic accident handling regulations; Basic knowledge of motor vehicles; Local regulations; Knowledge of braking systems and safety devices for large and medium-sized passenger and freight vehicles; Special knowledge for wheeled self-propelled machinery, trams, and trolleybuses. Subject 1 exam notes: Candidates should dress appropriately—no slippers allowed. Electronic devices and bags are prohibited in the exam room. Bring your ID card and queue to enter the waiting hall. Observe the precautions and procedures on the large screen before entering the exam room and store personal items in lockers. Upon entering, verify your identity at the assigned seat and begin the exam. Ensure the camera is aligned with you and follow exam discipline. If you fail the first attempt, a retake is available the same day. If you fail again, you must pay to reschedule. After the exam, queue to collect and sign your score report. Unsigned reports are invalid. There is no limit to the number of Subject 1 exam retakes. Each subject exam allows one retake if failed. If the retake is not taken or is failed, the exam process ends, and the applicant must reschedule. In contrast, Subject 2 and Subject 3 only allow five exam attempts. If the Subject 3 safe and civilized driving knowledge exam is failed, the passed road driving skills exam results remain valid. The driver's license test consists of three subjects: Subject 1, Subject 2, and Subject 3. Subject 1 refers to the road traffic safety laws, regulations, and related knowledge exam. Subject 2 refers to the field driving skills exam. Subject 3 is divided into two parts: road driving skills and safe and civilized driving knowledge. The safe and civilized driving knowledge exam is conducted after Subject 3, so it is commonly referred to as Subject 4. However, the official term (as per Ministry of Public Security Order No. 123) does not include "Subject 4."

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What is the reason for the burning of gas valves in Ningdong 6320 diesel engines?

Ningdong 6320 diesel engines burn gas valves due to severe matching wear or faults such as valves not closing tightly. Engine Introduction: An engine is a machine capable of converting various forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. Engine Working Principle: The working principles of two-stroke engines and four-stroke engines are different, with the majority of automobile engines being four-stroke. The working cycle of a four-stroke gasoline engine consists of 4 piston strokes: intake stroke, compression stroke, power stroke, and exhaust stroke.

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What to Do When the EPC Light Is On and the Car Won't Start?

Solutions for when the EPC light is on and the car won't start: Clean the throttle body, use fuel that meets quality standards; remove carbon buildup from related parts; reprogram the ECU data. Below are the relevant details: 1. Causes: Intake system malfunctions, such as leaks or blockages; dirty throttle body with excessive carbon buildup; use of substandard fuel; abnormal cylinder pressure, poor operating conditions; occasional faults, false alarms; valve issues, sticking or carbon buildup. 2. EPC: EPC = Electronic Power Control (full name: Engine Electronic Stability System), also known as Electronic Stability Control. This system consists of sensors, controllers, and other components. When a sensor fails or detects an abnormal condition, the control system will take appropriate measures based on pre-set programs.

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Why does the new Sail chassis make a clunking noise?

The new Sail chassis makes a clunking noise due to uncoordinated movement between components. Causes of chassis noise include: the chassis impacting other equipment, loose nuts, or transmission shaft failure. Solutions for chassis noise: repair components, tighten nuts, or replace the transmission shaft. Causes of chassis noise: The chassis noise may be caused by friction between components, impact with other equipment, resulting in noise. Long-term driving on poor road conditions can naturally loosen nuts, rupture dust covers, or cause transmission shaft issues. Solutions for chassis noise: Repair or replace new components, as they work in coordination; looseness can affect the chassis. Tighten nuts, as improper installation or removal can also lead to chassis problems. Damage between transmission shafts should be repaired promptly.

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How to Check the Vacuum Booster?

Vacuum booster inspection method is: 1. Turn off the engine, then press the brake pedal several times with force to eliminate the vacuum inside the vacuum booster. 2. Press the brake pedal with appropriate force and keep the pedal in the braking position, then start the engine. 3. If you feel the brake pedal position drops slightly, it indicates the vacuum booster is functioning normally. Otherwise, check the vacuum pipeline or the vacuum booster. Introduction to vacuum booster: 1. The vacuum booster is a component that uses vacuum (negative pressure) to amplify the force applied by the driver on the pedal. 2. The vacuum booster is generally located between the brake pedal and the brake master cylinder. For easy installation, it is usually integrated with the master cylinder as a single unit, with part of the master cylinder extending into the vacuum booster housing.

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Why Does the Steering Wheel Shake on the Highway?

Here are the reasons for steering wheel shaking on the highway: 1. Poor tire dynamic balance: During driving, if a tire experiences a strong local impact, it may cause the balance weights to fall off or become damaged, affecting the tire's dynamic balance. 2. Significant differences in tire pressure among the four tires: When there is a large difference in tire pressure among the four tires, especially between the left and right wheels, the car will experience noticeable bumps and steering wheel shaking at high speeds. 3. Poor wheel alignment: When the wheel alignment angles deviate significantly, the car may exhibit body drift and shaking at high speeds, as well as uneven tire wear, accelerating tire wear and shortening tire lifespan.

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Can Water Be Used to Extinguish a Tire Fire?

How long is the validity period for Subject 1?

What is the reason for the burning of gas valves in Ningdong 6320 diesel engines?

What to Do When the EPC Light Is On and the Car Won't Start?

Why does the new Sail chassis make a clunking noise?

How to Check the Vacuum Booster?

Why Does the Steering Wheel Shake on the Highway?

What is a standard two-wheeled motorcycle?

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What is the working principle of the braking system in new energy vehicles?