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87. What is the meaning of this sign?
A. Reducing speed 40m ahead
B. Minimum speed is 40km/hr
C. Axle weight limit is 40 tons
D. Maximum speed limit is 40km/hr
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
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- 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.
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- When encountering a vehicle in front ascending on a mountainous road covered with ice and snow, what should the motor vehicle driver do?
- When a motor vehicle encounters an accident, the driver should pay attention to whether there is fuel leakage, pipeline rupture, so as avoid accidents.
- When a motor vehicle temporarily stops in fog, which lamp should be turned on?
- When approaching a vehicle on a narrow slope, which one of the following ways is correct?
- 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.
- The first-aid measure to rescue a poisoned person is to _______.
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- What is the meaning of this sign?
- How to ensure motor vehicles have sufficient power when driving uphill?
- Gun powder, explosives and detonating powder belong to which of the following dangerous chemicals?
- What is the meaning of this sign?