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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
- How will the adhesive force of road change when speed increases on a damp and slippery road?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- When a motor vehicle stops in snow, which lamp should be turned on?
- When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
- When a wounded person is under the wheel or cargo, the wrong method is to pull the limbs of the wounded.
- What is the meaning of this sign?
- What is the meaning of this sign?
- What kind of harmful effect will be brought about by continuously using the foot brake on a long downhill road?
- When following other vehicles on a foggy day, what should the driver do?
- The wrong method to rescue a poisoned person in a traffic accident is to ______.
- What is the meaning of this sign?
- When the wounded person is suffering main artery bleeding, where should the rescue personnel press by thumb to stop the bleeding?
- When carrying the wounded persons in coma or in danger of suffocation, they should lie face up.
- What is the meaning of this sign?