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40. 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.
Answer：Y
Previous question: 39. The wrong method to rescue a poisoned person in a traffic accident is to ______.
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
- How should lamps be used when motor vehicle drivers pass through a two-way tunnel?
- When approaching a vehicle on a narrow slope, which one of the following ways is correct?
- When driving in rain and encountering pedestrians with umbrellas or wearing raincoats, what should be done by motor vehicle drivers in order to yield?
- What is the meaning of this sign?
- What is the meaning of this sign?
- When there is bleeding at the bone fracture of a wounded person, the first thing to do is to fix the wounded part in position, then stop the bleeding and dress the wound.
- How to ensure safe driving at night?
- When following other vehicles on a foggy day, what should the driver do?
- 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.
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- When a wounded person suffering bone fracture in the thigh, shank and spine, it is necessary to keep the fracture in position and refrain to move the wounded person.
- In emergencies, people¡¯s life safety should always be put in the first place.
- How will the adhesive force of road change when speed increases on a damp and slippery road?
- What needs attention when a motor vehicle drives on a road covered with ice and snow?