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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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2026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 2026 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 is the meaning of this sign?
- What is the meaning of this sign?
- When driving in rain and encountering pedestrians with umbrellas or wearing raincoats, what should be done by motor vehicle drivers in order to yield?
- What is the meaning of this sign?
- When approaching a vehicle on a narrow slope, which one of the following ways is correct?
- What is the meaning of this sign?
- In emergencies, people¡¯s life safety should always be put in the first place.
- When rescuers enter the scene to rescue the wounded after harmful gas leakage caused by traffic accidents, they must wear air respirators or cover their mouth and nose with wet towels.
- What is the meaning of this sign?
- When driving on road sections where safe sight distance is affected, such as the top of a ramp, what should drivers do to ensure safety?
- What is the meaning of this sign?
- Which of the following is a bad habit when changing lanes?
- How will the adhesive force of road change when speed increases on a damp and slippery road?
- What is the meaning of this sign?
- When a wounded person is unable to get off the vehicle by himself, he should be removed from the vehicle so as to avoid a secondary injury.
- When a motor vehicle stops temporarily in a rainy day,which lamp should be turned on?