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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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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
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- When rescuing a wounded person who has been poisoned by toxic gas, the first measure is to send him to a place where air is fresh so that he will not continue to be poisoned.
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- The drivers, loaders and supercargoes responsible for dangerous chemicals transportation should all full understand the chemical characteristics, potential risks, features of the packaging containers and emergency measures for any unexpected accidents.
- When a motor vehicle stops temporarily in a rainy day,which lamp should be turned on?
- How will the adhesive force of road change when speed increases on a damp and slippery road?
- When rescuing the persons who are losing blood, it is necessary to ______ first.
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- What needs attention when a motor vehicle drives on a road covered with ice and snow?
- When encountering a vehicle in front ascending on a mountainous road covered with ice and snow, what should the motor vehicle driver do?
- What is the meaning of this sign?
- What is the most frequent problem for driving on a muddy road?
- How should lamps be used when a motor vehicle meets an oncoming bicycle on a narrow road or a narrow bridge at night?