How to Effectively Practice for Subject One Exam?

Is It Dangerous to Leave Lithium Batteries in the Car During Summer?

Leaving lithium batteries in the car during summer is extremely dangerous, as the batteries can explode when exposed to high temperatures. Here is some relevant information about power batteries: 1. High-temperature resistance: In high-temperature tests, ordinary lithium batteries can withstand temperatures of 200 degrees, 500 degrees, and even 800 degrees. However, such extreme temperatures are rarely encountered in daily life. 2. Temperature limits: Under high-temperature conditions, significant heat fluctuations can occur inside the battery, leading to safety hazards such as explosions. The temperature limit for lithium batteries is generally set between 40-60 degrees. Most batteries are labeled with explosion-proof valves, while high-temperature-resistant lithium batteries can withstand up to 800 degrees.

20

3

Share

What does a range of 40km mean?

Range of 40km means the maximum distance is 40km. Here are the relevant explanations: 1. Fuel engine range: Range refers to the total distance that vehicles like cars or ships can travel continuously with maximum fuel reserve. In other words, an electric vehicle's range is the distance traveled from a fully charged state of the power battery until the test ends as per standard regulations. 2. New energy vehicle range: For new energy vehicles, the maximum battery-supported range refers to the farthest distance the vehicle can travel in pure electric mode relying solely on the battery's charge.

20

5

Share

What Happens If Car Spark Plugs Are Not Replaced for a Long Time?

If car spark plugs are not replaced for a long time, the following issues may occur: difficulty starting, reduced power, excessive exhaust emissions, and increased fuel consumption. Under normal maintenance conditions, spark plugs should be replaced after driving 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it is recommended to follow the vehicle's manual. The following standards can be referenced for maintenance replacement: platinum spark plugs should be replaced at 40,000 kilometers, standard nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Steps for replacing spark plugs: Open the engine hood, lift the plastic cover of the engine, and remove the high-voltage ignition wires. Mark the position of each cylinder 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 they are thoroughly cleaned. 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.

16

0

Share

How to Fix Black Smoke from Motorcycle?

Below is a detailed introduction to the repair methods for black smoke from motorcycles: 1. Replace with a slightly smaller idle jet. 2. Adjust the float height: Observe the fuel level in the float chamber; it should be at about 2/5 of the chamber for a normal level (Note: When opening the lower cover to check the fuel level, the carburetor must be held upright to prevent spilling gasoline, which could lead to inaccurate fuel level judgment). 3. There are three types of starting enrichment valves: (1) Manual plunger-type enrichment valve: Repairing a manual plunger-type enrichment valve is relatively simple. It can be fixed by cleaning the plunger, replacing the spring, or addressing the pull cord return issue. (2) Vacuum diaphragm plunger-type enrichment valve: For a vacuum diaphragm plunger-type enrichment valve, mainly check whether the vacuum tube or vacuum diaphragm is cracked or leaking. (3) Electric heating plunger-type enrichment valve: For an electric heating plunger-type enrichment valve, issues are usually due to damaged heating elements or faulty power supply lines. Damaged heating elements must be replaced. 4. Replace with standard new parts: If the gap between the needle jet and the main jet is too large, replace them with standard new parts.

3

1

Share

How many points are deducted for stalling in Subject 2?

Causing the engine to stall once due to improper operation will result in a deduction of 10 points. Other common situations that lead to point deductions include the following: Vehicle crossing the line, failing to reverse into the garage, stopping midway, not following the prescribed route or sequence, or exceeding the allotted time will result in a deduction of 100 points. For slope parking: if the right side of the vehicle is more than 30 cm from the roadside line after parking, 10 points are deducted; if it exceeds 50 cm, 100 points are deducted. Running over or brushing against the line results in a 100-point deduction. If the front bumper is not aligned with the pole line and deviates by more than 50 cm, 10 points are deducted; if it exceeds 50 cm, 100 points are deducted. Subject 2 has a maximum score of 100 points, with evaluation criteria set for failing, deducting 20 points, deducting 10 points, and deducting 5 points. The test is considered passed under the following conditions: ① For large passenger vehicles, tractors, city buses, medium-sized passenger vehicles, and large trucks, a score of 90 or above is required; ② For other vehicle types, a score of 80 or above is required.

10

1

Share

How to Adjust the Headlights of Geely New Vision?

Geely New Vision can be adjusted via the knob at the rear of the headlight assembly, allowing owners to adjust the lights themselves using tools. Lift the engine hood, locate the adjustment knob at the back of the headlight assembly, and use the appropriate tool for adjustment. Before adjusting, determine whether the knob controls left-right or up-down movement. The following precautions should be noted when adjusting the headlights: 1. Choose a dim environment: such as an underground parking lot or at night. Park the car facing a wall, ensuring the front of the car is aligned with the wall and about 5-6 meters away. 2. Cover one headlight with an opaque thick cloth: Adjust each headlight individually. To ensure the light beam position is correct for normal driving, avoid adjusting with the vehicle unloaded; having a friend sit in the driver's seat is recommended. 3. Mark the headlight position on the wall: Also mark the position on the wall corresponding to the car emblem (center of the front). Measure the distance from each headlight mark to the center mark; the distances should be equal. If the lights are tilted outward or inward, refer to the vehicle's manual and use a screwdriver for fine adjustments to ensure the headlights are symmetrically aligned. 4. Adjust the beam height appropriately: The right headlight should be level, while the left headlight should be raised about 10cm, but not too high to avoid blinding oncoming drivers.

19

0

Share

How to Effectively Practice for Subject One Exam?

Is It Dangerous to Leave Lithium Batteries in the Car During Summer?

What does a range of 40km mean?

What Happens If Car Spark Plugs Are Not Replaced for a Long Time?

How to Fix Black Smoke from Motorcycle?

How many points are deducted for stalling in Subject 2?

How to Adjust the Headlights of Geely New Vision?

Is It Necessary to Clean the Exterior of the Engine?

Can I call the police if my parked car gets scratched?

Is driving at 105 km/h in a 100 km/h speed limit considered speeding?

Can You Drive with 80 Tire Pressure?