How long should I watch the theoretical training videos for Subject 1?

What is the real reputation of Volkswagen's dry dual-clutch transmission?

Volkswagen's 7-speed dry dual-clutch transmission has a polarized reputation in the market. Explanation of Volkswagen's 7-speed dry dual-clutch transmission: As the name suggests, Volkswagen's 7-speed dry dual-clutch transmission has some internal structures without lubrication oil, aiming to save the cost of a few liters of transmission oil. The transmission features two separate oil chambers in its oil circuit design, using less than half the oil volume of an automatic transmission. This special construction allows it to withstand higher torque output while maintaining low maintenance costs. However, the disadvantages of Volkswagen's 7-speed dry dual-clutch transmission are also evident. In traffic congestion, due to insufficient lubrication oil, the heat generated by the transmission cannot dissipate in time, leading to sluggish gear shifting and strong jerking sensations. Therefore, it is crucial to be cautious when choosing Volkswagen's 7-speed dry dual-clutch transmission. Considerations when choosing Volkswagen's dual-clutch transmission: Overall, dual-clutch transmissions offer smooth and fast gear shifting with good fuel economy. It should be noted that the failure rate of dry dual-clutch transmissions is higher than that of wet dual-clutch transmissions. In the past, Volkswagen had a very high market share in the United States, but due to the oil crisis leading to rising fuel prices, Japanese cars with CVT transmissions, which excel in smoothness and fuel economy, gained favor among American consumers.

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What are the reasons for a manual transmission new Jetta not starting?

Manual transmission new Jetta not starting reasons are as follows: 1. Battery depletion: Battery depletion is one of the most common reasons for a car not starting. A depleted battery usually manifests as the starter not working or rotating insufficiently when attempting to start. In such cases, call the service station for rescue, or find another car to jump-start, or temporarily start the car, after which the battery must be recharged at the service station. 2. Fuel flow obstruction: Generally manifests as no oil pressure in the engine fuel supply pipe. This situation often occurs on particularly cold mornings, caused by long-term dirt in the fuel line. At extremely low temperatures, water and debris mix to block the fuel line, resulting in failure to start. In this case, place the car in a warm environment, and it will start after a while, or use the method of cleaning the fuel line for a complete solution. 3. Poor ignition system performance: On particularly cold days, due to low intake temperature, fuel atomization in the cylinder is poor. If combined with insufficient ignition energy, the result is cylinder flooding, where excessive fuel accumulates in the cylinder, exceeding the ignition limit concentration and preventing the car from starting. In this case, unscrew the spark plug to wipe off the oil between the electrodes, and the car will start after reinstallation. A thorough solution is to check the ignition system and eliminate the causes of low ignition energy, such as spark plug electrode gap, ignition coil energy, high-voltage line condition, etc.

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Is the Difference Between Seat Subwoofer and Trunk Subwoofer Significant?

Seat subwoofers and trunk subwoofers do not differ significantly, and trunk installation is generally preferred with appropriate volume levels. Below is an introduction to car subwoofers: 1. Principle: The internal amplifier circuit divides sound into several wavelength segments through a crossover. The mid-to-high frequency segments (mid-high tones) are output to satellite speakers, while the mid-to-low frequency segments (mid-low tones) are output to the subwoofer. Typically, a subwoofer produces long-wave sounds between 20-200Hz, which are easily heard but difficult to localize due to their long wavelengths. These long-wave sounds are transmitted through a bass reflex port, resonating with satellite speakers. The combined weak bass from the subwoofer and satellite speakers is then reproduced by the satellite speakers, creating a vibrant bass effect that seems to originate from the satellite speakers. 2. Function: The subwoofer enhances the low-frequency range, particularly the long-wave segments (below 100Hz, including infrasound, which is inaudible but effective). Since regular speakers, limited by size, cannot produce low-frequency sounds with longer wavelengths, a larger subwoofer is required to generate intense low-frequency effects. Additionally, bass waves, being the longest, have lower efficiency in energy conversion, making them more power-consuming to produce the same output power, thus requiring higher input power.

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What does it mean that Citroen can perform Qinggong?

Citroen can perform Qinggong refers to the severe shaking of Citroen cars when driving on bumpy roads and their tendency to feel unstable at high speeds. Vehicle Introduction: Citroen has a century-long history of car manufacturing (since 1915) and is considered on par with Mercedes-Benz and BMW in Europe. The world's first front-wheel-drive car was the Citroen 7A, featuring front-wheel drive, a monocoque body structure without a chassis, and innovative suspension systems like torsion bar suspension for single-wheel damping. Additionally, after Saab developed the turbocharger, Citroen became the first car in the world to be equipped with a turbocharger. These are all milestone achievements in automotive history. Funny Rhyme: Buick is thick, Lexus is slow, Ford loves broken axles, Mercedes parts bring sorrow, Volkswagen burns oil. Maintenance fees, Audi is pricey, Nissan shells are brittle, Peugeot gets bashed by many, Suzuki has retreated. Big Jaguar, high fuel consumption, Hyundai feels light as a feather, Chevrolet like a sanitary pad, BMW loves to burn. The nouveau riche love Land Rover, Honda has lost speed, where there's a road there's a Toyota, but it can't stop. Mazda, noisy as can be, the underdogs love Kia, Volkswagen plays dead with Skoda, and now there's Jetta. Citroen, can perform Qinggong, the chassis is most authentic, Cadillac is in price cuts, and Hongqi is all the rage.

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Can you drive over the white grid lines at intersections?

White grid lines on the road surface are channelizing lines and should not be driven over. According to regulations, channelizing lines mainly consist of one or several white V-shaped or diagonal stripe areas set up based on the intersection terrain, indicating that vehicles must follow the prescribed route and must not drive over or cross these lines. The following types of road lines should not be driven over: Yellow solid lines: Currently, domestic yellow solid lines come in two types—double yellow lines and single yellow lines—essentially serving as prohibition lines. They are generally used to separate opposing traffic. If a yellow solid line is in the middle of the road, whether it is a double or single yellow line, it should not be crossed. White solid lines: White solid lines are the most common road markings, used to separate lanes traveling in the same direction, helping drivers stay on their designated paths. These lines appear on urban roads and intersections, standardizing driving routes and greatly improving travel safety. Yellow grid lines: The purpose of yellow grid lines is to prohibit parking. They are most commonly found at the entrances of government buildings. Vehicles must not park arbitrarily in areas marked with yellow grid lines, as doing so can obstruct traffic flow and hinder vehicles exiting the premises. These areas are strictly for passing through, not stopping. Channelizing lines: These are V-shaped or triangular areas set up at intersections based on actual road conditions, designed to help drivers accurately determine the direction for going straight or turning right, or to serve as waiting areas for pedestrians at traffic lights. Such markings are commonly found at highway ramps, multi-forked intersections, and complex large crossroads, playing a crucial role in guiding traffic.

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Can a C1 driver's license be upgraded to an A2?

A C1 license cannot be directly upgraded to an A2. If you already hold a C1 driver's license, the fastest way to obtain an A2 license is to upgrade to a B1 or B2 license after holding the C1 license for at least one year. After obtaining the B1 or B2 license, you must have three years of driving experience before you can apply for an A2 license. Therefore, upgrading from a C1 to an A2 license requires at least four years. Alternatively, you can take the second method, which is to directly obtain a B2 license. After holding the B2 license for three years with driving experience, you can also upgrade to an A2 license. This method is faster, but it does not involve upgrading directly from a C1 license. According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses" (Ministry of Public Security Order No. 123) of the People's Republic of China, the following conditions must be met for upgrading a driver's license: Article 14: If you already hold a motor vehicle driver's license and apply to add a permitted driving category, you must not have accumulated 12 penalty points in the current scoring cycle or the most recent scoring cycle before the application. For applications to add medium-sized passenger vehicles, tractors, or large passenger vehicles, the following additional conditions apply: To apply for adding a medium-sized passenger vehicle category, you must have held a license for urban buses, large trucks, small cars, small automatic transmission cars, low-speed trucks, or three-wheeled vehicles for at least three years and must not have accumulated 12 penalty points in the most recent three consecutive scoring cycles before the application. To apply for adding a tractor category, you must have held a license for medium-sized passenger vehicles or large trucks for at least three years, or have held a license for large passenger vehicles for at least one year, and must not have accumulated 12 penalty points in the most recent three consecutive scoring cycles before the application. To apply for adding a large passenger vehicle category, you must have held a license for medium-sized passenger vehicles, urban buses, or large trucks for at least five years, or have held a license for tractors for at least two years, and must not have accumulated 12 penalty points in the most recent five consecutive scoring cycles before the application. In temporary residence areas, the permitted driving categories that can be added are small cars, small automatic transmission cars, low-speed trucks, three-wheeled vehicles, ordinary three-wheeled motorcycles, ordinary two-wheeled motorcycles, and light motorcycles. Article 15: Under any of the following circumstances, you may not apply for large passenger vehicles, tractors, medium-sized passenger vehicles, or large trucks: If you have caused a traffic accident resulting in death and bear equal or greater responsibility; If you have driven a motor vehicle under the influence of alcohol; If your motor vehicle driver's license has been revoked or canceled for less than ten years. According to the "Permitted Driving Categories and Codes" (Ministry of Public Security Order No. 139) of the People's Republic of China: The A1 permitted driving category is for large passenger vehicles, which includes large passenger-carrying vehicles, and also permits driving A3, B1, B2, C1, C2, C3, C4, and M categories. According to the "Permitted Driving Categories and Codes" (Ministry of Public Security Order No. 139) of the People's Republic of China: The A2 permitted driving category is for tractors, which includes heavy and medium-sized full trailers and semi-trailer combinations, and also permits driving B1, B2, C1, C2, C3, C4, and M categories.

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How long should I watch the theoretical training videos for Subject 1?

What is the real reputation of Volkswagen's dry dual-clutch transmission?

What are the reasons for a manual transmission new Jetta not starting?

Is the Difference Between Seat Subwoofer and Trunk Subwoofer Significant?

What does it mean that Citroen can perform Qinggong?

Can you drive over the white grid lines at intersections?

Can a C1 driver's license be upgraded to an A2?

What does 8j mean for wheel rims?

Does Wheel Rim Scratch Affect Safety?

How to Remove the 120 km/h Speed Limit on Haval M6?

How to Reset the Tire Pressure Fault on a 2017 Magotan?