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51. What is the meaning of this sign?
A. Embankment road
B. Steep uphill road
C. Continuous up slopes
D. Steep downhill road
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
- At the scene of a traffic accident, once there is a leakage of toxic and harmful substances, people must be evacuated at the first time and alarmed immediately.
- Gun powder, explosives and detonating powder belong to which of the following dangerous chemicals?
- What should be checked before driving?
- 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?
- 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?
- Matches, sulfur and red phosphorus are _________.
- 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 using splints, sticks or tree branches to keep the unexposed bones in position, it is necessary that these things should exceed the upper and lower joints of the wound.
- When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
- What is the meaning of this sign?
- When a motor vehicle encounters a burning phenomenon, it should leave the vehicle quickly so as not to cause injury or asphyxia to the respiratory tract.