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63. What is the meaning of this sign?
A. Bump road
B. Low-lying road
C. High outburst road
D. Hump bridge
Answer：B
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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?
- Which of the following measures is incorrect when a motor vehicle stops?
- 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?
- 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.
- When rescuing a wounded person in coma, it is necessary to take warm-keeping measures to prevent heat loss.
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- When encountering a vehicle in front ascending on a mountainous road covered with ice and snow, what should the motor vehicle driver do?
- Which of the following is a bad habit when changing lanes?
- When a gas tanker is leaking heavily, which of the following measures is wrong?
- When an erosive material catches fire, it should not be put out with water cannon.
- What is the main impact of foggy weather on safe driving?