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28. Matches, sulfur and red phosphorus are _________.
A. Explosives
B. Inflammable solid materials
C. Self-igniting articles
D. Oxidizing materials
Answer：B
Previous question: 27. Gun powder, explosives and detonating powder belong to which of the following dangerous chemicals?
Next question: 29. Which of the following is an inflammable solid material?
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
- When approaching another vehicle at night, why should the driver alternate between high-and-low-beam at a distance more than 150 meters?
- What is the meaning of this sign?
- How should lamps be used by the motor vehicle driver who follows a vehicle on a road section at night where he street light condition is good?
- When a wounded person suffering burns is thirsty, he should only drink plain boiled water.
- Gun powder, explosives and detonating powder belong to which of the following dangerous chemicals?
- How should a motor vehicle follow the other vehicle In front when driving on a road covered with ice and snow?
- When there is bleeding at the bone fracture of a wounded person, the first thing to do is to keep it in position before stopping the bleeding and dress the wound.
- What is the meaning of this sign?
- When rescuing a wounded person suffering from bone fracture, which of the following should be kept in mind?
- 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.
- What is the meaning of this sign?
- When removing a wounded person suffering spinal fracture, the rescuer should never help the wounded person to walk. He may be carried away with a soft stretcher.
- When driving on a long downhill road, which is the best way to control the speed?
- What is the meaning of this sign?
- Dangerous chemicals possess the characteristics of explosion, inflammation, poison, erosion and radiation.
- What should the driver do when he/she encounters an oncoming ambulance in the same lane?