How long can you typically drive with a flat tire?

How many chances are there for each Subject 4 exam?

According to the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," there is no limit on the number of attempts for Subject 4. If you fail the first exam on the same day, you can retake it once on-site. If you still fail, you need to reschedule the exam, and no additional fees are required for retakes. However, it is important to note that the validity period of the driving skill test permit is three years. If the applicant fails to complete the exam within this period, the results of any previously passed subjects will become invalid. Subject 4 consists of 50 questions, primarily in the form of case studies, images, and animations, with a full score of 100 and a passing score of 90. Subject 4, also known as the theoretical exam or driver's theory test, is part of the motor vehicle driving license assessment. After the implementation of the Ministry of Public Security's Order No. 123, Subject 3 was divided into two parts: the road test and the safety and common sense test, commonly referred to as "Subject 4," which evaluates "driving ethics." Subject 4 is the colloquial term for the safety and civilized driving common sense test under Subject 3, not a separate subject. Since this test is conducted after Subject 3, it is commonly called Subject 4. Officially, there is no "Subject 4" in the terminology. Subject 4 Exam Notes: Exam Duration: The exam lasts 45 minutes, and answering 6 questions incorrectly (12 points) will terminate the exam. Number of Questions: 50 questions are selected proportionally from the Subject 4 question bank based on the type of driving license, with each question worth 2 points. Question Types: The exam includes single-choice questions (including true/false questions) and multiple-choice questions. Questions 1-10 are true/false; 11-40 are single-choice; and 41-50 are multiple-choice. The exam also includes animation-based, image-based, scenario recognition, and text-based questions. Retake Notes: If you fail Subject 4, you only need to retake Subject 4. The driving school will schedule the retake, and there is no limit on the number of retakes. You can retake the exam until you pass, and no additional fees are required for Subject 4 retakes. Subject 4 Exam Tips: Strengthen weak areas and identify the reasons for mistakes. For marked questions, do not just memorize the correct answer. Refer to regulations, textbooks, or reference materials to understand the reasoning behind the mistakes. Categorize and summarize questions. Use the question bank analysis to group similar questions, as many questions in the bank are similar and easily confused. For example, traffic signs such as "pedestrian," "walking," "pedestrian crossing," and "caution pedestrian crossing" have similar patterns and can be confusing. Grouping them during study helps avoid mistakes. Use memorization techniques: Many questions involve numbers, which can be summarized for easier recall. The driving test consists of three subjects: Subject 1, Subject 2, and Subject 3, with Subject 3 divided into two parts. Subject 1 covers traffic safety laws, regulations, and related knowledge; Subject 2 evaluates field driving skills; and Subject 3 assesses road driving skills and safety and civilized driving common sense.

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Is it mandatory to use 95-octane gasoline for the Bora 1.4T?

According to the official vehicle manual recommendation, the Bora 1.4T should use 95-octane gasoline. If the Bora 1.4T occasionally uses the wrong gasoline grade, simply switch back to the correct grade after consumption. However, long-term use of the wrong gasoline grade may have the following effects: For vehicles recommended to use lower-octane gasoline, mistakenly using higher-octane gasoline will not cause damage, but the increase in octane rating will alter the fuel's ignition point, leading to delayed combustion in the engine. This means both the engine's power output and thermal efficiency will decrease, resulting in poorer performance as experienced by the driver. For vehicles recommended to use higher-octane gasoline, using lower-octane gasoline can cause engine knocking. Due to the significantly lower octane rating, the reduced ignition point may cause premature ignition during the compression stroke. If combustion occurs before the spark plug fires, resistance will develop during the upward stroke. This resistance makes the engine run very unstably. Mild knocking only increases noise without obvious engine damage, but noticeable knocking indicates severe engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, potentially leading to cylinder scoring in severe cases. Besides checking the vehicle manual for the appropriate gasoline grade, the Bora 1.4T's fuel cap also displays this information. Generally, the gasoline grade can also be determined by the engine's compression ratio. Vehicles with a compression ratio between 8.6-9.9 should use 92-octane gasoline, while those between 10.0-11.5 should use 95-octane gasoline. However, with modern technologies, the compression ratio alone cannot determine the required gasoline grade. High compression ratio engines can be tuned to use lower-octane gasoline due to other influencing factors such as ignition timing, turbocharging technology, and Atkinson cycle technology. Generally, higher gasoline grades have higher octane ratings and better anti-knock properties. 92-octane gasoline contains 92% isooctane and 8% n-heptane, while 95-octane gasoline contains 95% isooctane and 5% n-heptane.

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What are the causes of noticeable car shaking?

The causes of noticeable car shaking are: 1. The engine throttle is too dirty or the fuel injector has excessive carbon deposits. The gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in an excessively lean mixture during cold starts and difficulty in starting; 2. Poor performance of the ignition system, including spark plugs, high-voltage wires, and ignition coils; 3. Abnormal fuel supply pressure, incorrect intake pressure values, and malfunctioning sensors. The solutions for noticeable car shaking are: 1. Clean the fuel system and check the idle speed motor to remove carbon deposits; 2. Check if the spark plugs have excessive carbon deposits and replace them if necessary; 3. Check the fuel pressure and replace faulty components.

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What Causes Abnormal Noise in a Motorcycle Engine?

Motorcycle engine abnormal noise is caused by: 1. Excessive clearance between the piston and cylinder wall; 2. Camshaft timing gear fracture or its fixing nut loosening. The most important thing for a motorcycle is to change the engine oil. Engine oil is called the blood of the engine. If there is no engine oil in the engine, the engine cannot operate normally. Engine oil plays the roles of lubrication, cleaning, sealing, buffering, and rust prevention in the engine. A motorcycle is a flexible and fast means of transportation, driven by a gasoline engine, and controlled by a handlebar to steer the front wheel of a two-wheeled or three-wheeled vehicle. It is lightweight, flexible, fast, and widely used for patrolling, passenger and cargo transportation, and sports equipment.

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How to Repair Scratched Car Wheel Hubs?

The methods to repair scratched car wheel hubs are: 1. Clean the wheel hub; 2. Smooth it by sanding; 3. Apply paint and oil. The maintenance methods for tires are: 1. Regularly remove stones stuck in the tire treads; 2. Minimize exposure to direct sunlight; 3. Regularly check tire pressure; 4. Pay attention to the maintenance of the suspension system; 5. Be mindful of driving habits, choose smooth roads while driving, avoid objects that can puncture or scratch the tires, and steer clear of chemical spills that may corrode the tires. The wheel hub is the rotating part of the tire's inner rim connected by spokes to the wheel center, which is the metal component mounted on the axle that supports the tire.

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What Causes the Jerking Sensation When Shifting Gears in Park for an Automatic Transmission?

Possible causes for the jerking sensation when shifting gears in park for an automatic transmission include: transmission clutch pressure leakage; obstructed transmission fluid passages; and transmission fluid not filled to the standard level. 1. Reasons for the jerking sensation when shifting gears in park for an automatic transmission: Internal clutch pressure leakage in the transmission. Check if the clutch is damaged. The transmission fluid passages are also obstructed. Wear on the valve body, long-term lack of transmission fluid changes leading to degradation and reduced lubrication effectiveness, a dirty transmission filter reducing filtration efficiency, allowing wear particles to enter the valve body. 2. Additional tips: Techniques to resolve gear shifting jerking: The key during gentle acceleration is to press the accelerator slowly, lift the foot lightly, and then press again. Automatic transmissions generally complete gear shifts at low RPMs, effectively addressing the issue of jerking during gear shifts.

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How long can you typically drive with a flat tire?

How many chances are there for each Subject 4 exam?

Is it mandatory to use 95-octane gasoline for the Bora 1.4T?

What are the causes of noticeable car shaking?

What Causes Abnormal Noise in a Motorcycle Engine?

How to Repair Scratched Car Wheel Hubs?

What Causes the Jerking Sensation When Shifting Gears in Park for an Automatic Transmission?

How Deep Can Water Be Before a Car Cannot Pass Through?

What are the differences between Transit V362 and V348?

What should the driving speed be controlled at when passing through a narrow bridge?

How to Solve the Problem of No Oil Coming from the Brake Pump?