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52. What is the meaning of this sign?
A. Continuous down slopes
B. Steep downhill road
C. Steep uphill road
D. Continuous up slopes
Answer：A
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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 approaching another vehicle at night, why should the driver alternate between high-and-low-beam at a distance more than 150 meters?
- 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 a motor vehicle passes over an overflowing bridge, what should the driver do after stopping and observing closely?
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- When a gas tanker is leaking heavily, which of the following measures is wrong?
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- When following other vehicles on the uphill section of a mountain road, what should the driver do if the vehicle in front stops?
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- When a motor vehicle temporarily stops in fog, which lamp should be turned on?
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- When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
- 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 an inflammable solid material?