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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
- When a motor vehicle temporarily stops in fog, which lamp should be turned on?
- When the wounded person is suffering main artery bleeding, where should the rescue personnel press by thumb to stop the bleeding?
- When carrying the wounded persons in coma or in danger of suffocation, they should lie face up.
- What is the meaning of this sign?
- When removing a wounded person suffering spinal fracture, the rescuer should never help the wounded person to walk. He may be carried away with a soft stretcher.
- Which of the following is an inflammable solid material?
- When driving on a long downhill road, which is the best way to control the speed?
- When following other vehicles on a foggy day, what should the driver do?
- When rescuing a wounded person who has been poisoned by toxic gas, the first measure is to send him/her to a place with fresh air so that he/she will not continue to be poisoned.
- What needs attention when a motor vehicle drives on a road covered with ice and snow?
- What is the meaning of this sign?
- What should motor vehicle drivers do when approaching an oncoming vehicle on a frozen road?
- When a gas tanker is leaking heavily, which of the following measures is wrong?
- When evading an emergency, except for being calm what principle should be held by drivers?
- What is the meaning of this sign?
- How to ensure motor vehicles have sufficient power when driving uphill?