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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 should be done by the driver who intends to overtake but finds that the vehicle in front is also overtaking?
- When an erosive material catches fire, it should not be put out with water cannon.
- When rescuing a person sustaining full-body burns the rescue personnel may spray cool water to his body to put out the fire.
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- What is the meaning of this sign?
- What is the meaning of this sign?
- The first-aid measure to rescue a poisoned person is to _______.
- When there is bleeding at the bone fracture of a wounded person, the first thing to do is to keep it in position before stopping the bleeding and dress the wound.
- Which of the following method is correct to rescue an unconscious person?
- How will the adhesive force of road change when speed increases on a damp and slippery road?
- What is the meaning of this sign?
- The article that cannot be used to stop bleeding by dressing is _________.
- What is the meaning of this sign?
- What needs attention when a motor vehicle drives on a road covered with ice and snow?
- What is the meaning of this sign?
- What is the meaning of this sign?