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49. What is the meaning of this sign?
A. Slippery section
B. Sharp curve
C. Inverse curve
D. Continuous curves
Answer：D
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2025年摩托车科目四英文版题库共345题，你可以免费查看前50题，完整版题库请添加微信购买：
The English version of the 2025 motorcycle subject 4 question bank has a total of 345 questions. You can view the top 50 questions for free. Please add WeChat to purchase the complete version of the question bank.
科目四试题
- What should be done by the driver who intends to overtake but the motor vehicle in front neither reduces its speed nor allows the right of way?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- The drivers, loaders and supercargoes responsible for dangerous chemicals transportation should all full understand the chemical characteristics, potential risks, features of the packaging containers and emergency measures for any unexpected accidents.
- Which lamp should be turned on when motor vehicles pass through a road section at night where the street light condition is good?
- When encountering a vehicle in front ascending on a mountainous road covered with ice and snow, what should the motor vehicle driver do?
- How should lamps be used when motor vehicle drivers pass through a two-way tunnel?
- What is the meaning of this sign?
- When a motor vehicle stops in snow, which lamp should be turned on?
- What should be done by the driver who intends to overtake but finds that the vehicle in front is also overtaking?
- What is the meaning of this sign?
- How to ensure motor vehicles have sufficient power when driving uphill?
- What kind of harmful effect will be brought about by continuously using the foot brake on a long downhill road?
- What is the meaning of this sign?