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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 driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
- How should a motor vehicle follow the other vehicle In front when driving on a road covered with ice and snow?
- When there is no bandage for rescuing a wounded person, which of the following measures is wrong?
- How should lamps be used when motor vehicle drivers pass through a two-way tunnel?
- How should lamps be used when a motor vehicle meets an oncoming bicycle on a narrow road or a narrow bridge at night?
- What is the meaning of this sign?
- When carrying the wounded persons in coma or in danger of suffocation, they should lie face up.
- What is the meaning of this sign?
- Which of the following method is correct to rescue an unconscious person?
- What is the meaning of this sign?
- In emergencies, people¡¯s life safety should always be put in the first place.
- When a motor vehicle temporarily stops in fog, which lamp should be turned on?
- When a gas tanker is leaking heavily, which of the following measures is wrong?
- What is the meaning of this sign?
- When putting out a fire disaster that gives out erosive steam or poisonous gas, the firefighters should wear gas masks and other related protective articles and should operate from the windward side.
- What is the meaning of this sign?