How to Turn on the Car's External Air Circulation?

Are the results of Subject One released immediately after the exam?

For the Subject One exam, you will receive an immediate notification if you pass. However, the specific score will be available for viewing on the 12123 platform approximately 24 hours later. You can also gauge your performance during the exam itself, as the system indicates whether each answer is correct right after submission. By considering the allocated points for each question and your accuracy rate, you can estimate your score. Here is some additional information: 1. Subject One: Also known as the theoretical driving test or driver's theory exam, Subject One is part of the assessment for obtaining a motor vehicle driver's license. According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses," the exam covers foundational driving theory, road safety laws and regulations, local statutes, and related knowledge. The test is computer-based, consisting of 100 questions, with a passing score of 90 or above. 2. Important Notes: Cancellation of the exam must be done six days in advance. Failure to cancel or attend the exam will result in a failing grade, requiring payment of a retake fee to reschedule. There are two attempts for Subject One. If both attempts result in failure, a retake fee is required to schedule the next retake.

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What is the difference between a camshaft and a crankshaft?

Here are the differences between a camshaft and a crankshaft: 1. Different in nature: (1) Crankshaft: It is the most important component in an engine. (2) Camshaft: It is a component in a piston engine. 2. Different in principle: (1) Crankshaft: The crankshaft is subjected to the combined effects of centrifugal force from rotating masses, periodically varying gas inertial forces, and reciprocating inertial forces, causing the crankshaft to bear bending and torsional loads. (2) Camshaft: The camshaft is usually forged from high-quality carbon steel or alloy steel, or cast from alloy cast iron or ductile iron. The journal and cam working surfaces are polished after heat treatment. 3. Different in function: (1) Crankshaft: It receives the force transmitted from the connecting rod and converts it into torque, which is output through the crankshaft to drive other engine accessories. (2) Camshaft: It controls the opening and closing actions of the valves. Although in a four-stroke engine, the speed of the camshaft is half that of the crankshaft (in a two-stroke engine, the speed of the camshaft is the same as that of the crankshaft), its speed is usually still very high, and it needs to withstand significant torque.

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What are the causes and solutions for high fuel consumption in scooter motorcycles?

The causes and solutions for high fuel consumption in scooter motorcycles are as follows: 1. Air filter system: Theoretically, the air filter element should be cleaned or replaced every 3,000 kilometers. The air filter not only affects fuel consumption but also power and engine durability. Consider replacing it with a new one. 2. Scooter clutch failure: For scooters, the clutch is also a wear-prone component, and counterfeit scooters may experience faster damage. The scooter's drive relies entirely on the clutch, and clutch damage first causes low-speed stuttering, affecting power and subsequently increasing fuel consumption. Replace the clutch if necessary. 3. Carburetor aging: Due to the generally poor quality of carburetors in cheap scooters and factors like fuel quality, carburetor aging and damage are accelerated. Damaged carburetors directly lead to incomplete fuel combustion, increasing fuel consumption. 4. Cylinder kit issues: The reciprocating motion of piston rings, pistons, and cylinders inevitably causes wear. Inferior cylinder kits wear out faster. Severe wear in the cylinder kit may lead to oil and fuel mixing, increasing fuel loss. Monitor cylinder kit wear and replace it promptly if severe wear is detected. 5. Other reasons: Such as tire pressure issues, spark plug problems, etc.

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Can a Spark Plug Still Be Used After Getting Wet?

It is not recommended to continue using a spark plug that has gotten wet; simply replace the spark plug. Criteria for determining spark plug damage: Damaged spark plugs may exhibit the following symptoms: difficulty starting the engine, reduced power, excessive exhaust emissions, and increased fuel consumption. Steps for replacing a spark plug: Open the hood, lift the plastic engine cover, remove the high-voltage ignition wires, and mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for any external debris such as leaves or dust, and ensure everything is cleaned thoroughly. Place the new spark plug into the spark plug hole, hand-tighten it a few turns, and then use the socket to tighten it further. Reinstall the high-voltage ignition wires in the firing order, and then secure the cover back in place.

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How many meters is the straight-line driving in Subject 3?

There is no fixed distance for the straight-line driving in Subject 3, but it is approximately 100 meters. Tips for maintaining straight-line driving: 1. Choose a fixed reference point: Many people think that seeing the road clearly in front of them helps in driving straight, but in fact, looking further ahead can be more helpful. You can find a fixed point ahead on the road, which could be an object or a certain marker, and follow it with your gaze while driving. 2. Maintain an appropriate speed: If the speed is too slow, the vehicle is more likely to deviate. Since the speed requirements for straight-line driving vary by location, you should drive at a steady speed according to the local requirements, avoiding significant acceleration or deceleration. 3. Steering wheel adjustments: Remember to make only "minor adjustments." The straight-line driving section is highly sensitive to steering wheel movements, and excessive turning will be detected by the system. If you notice the vehicle starting to deviate from the straight line, make a slight adjustment in the opposite direction, turning the wheel about 2mm. 4. Keep your hands and feet relaxed: Being overly tense can lead to unconsciously gripping the steering wheel too tightly and inaccurately controlling the accelerator pedal. This can cause the speed to fluctuate and make you forget to adjust the steering wheel. Keep your arms relaxed for flexible control of the steering wheel, and your legs natural to maintain a steady speed.

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Why doesn't the rear disc brake of the motorcycle work properly?

The rear disc brake may not work properly due to excessive wear of the brake pads, aging or damage of the brake pump, issues like sticking or insufficient pressure causing oil leakage, or the brake oil level being too low. Additionally, check if the passages in the pump are blocked. It might be necessary to replace the brake pump. Here is some additional information: 1. Disc brake: A disc brake consists of a brake disc connected to the wheel and a brake caliper at the edge of the disc. When braking, high-pressure brake oil pushes the brake pads to clamp the disc, creating the braking effect. 2. Function of disc brakes: Disc brakes have flat brake shoes on both sides of the brake disc. When the hydraulic pressure from the master cylinder is delivered to the wheel cylinder, it causes the brake shoes to clamp the disc, achieving the braking effect.

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How to Turn on the Car's External Air Circulation?

Are the results of Subject One released immediately after the exam?

What is the difference between a camshaft and a crankshaft?

What are the causes and solutions for high fuel consumption in scooter motorcycles?

Can a Spark Plug Still Be Used After Getting Wet?

How many meters is the straight-line driving in Subject 3?

Why doesn't the rear disc brake of the motorcycle work properly?

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