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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
- When a wounded person is under the wheel or cargo, the wrong method is to pull the limbs of the wounded.
- What is the meaning of this sign?
- When a motor vehicle stops temporarily in a rainy day,which lamp should be turned on?
- Dangerous chemicals possess the characteristics of explosion, inflammation, poison, erosion and radiation.
- Rescue personnel should check the breath of the unconscious person before applying any other emergency treatment.
- When rescuing a wounded person suffering from bone fracture, which of the following should be kept in mind?
- 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.
- What is the meaning of this sign?
- When a motor vehicle stops in snow, which lamp should be turned on?
- What is the meaning of this sign?
- Which lamp should be used when motor vehicles pass hrough an intersection at night where there is no traffic light signal?
- Which of the following is a bad habit when changing lanes?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What kind of harmful effect will be brought about by continuously using the foot brake on a long downhill road?