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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
- What is the meaning of this sign?
- When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
- When the tire pressure is too low, what can happen when driving at a high speed?
- How should a motor vehicle follow the other vehicle In front when driving on a road covered with ice and snow?
- Which of the following method is correct to rescue an unconscious person?
- 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.
- What is the meaning of this sign?
- How to ensure motor vehicles have sufficient power when driving uphill?
- When a wounded person suffering burns is thirsty, he may drink a small quantity of slightly salty water.
- When a motor vehicle encounters a burning phenomenon, it should leave the vehicle quickly so as not to cause injury or asphyxia to the respiratory tract.
- 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 approaching another vehicle at night, why should the driver alternate between high-and-low-beam at a distance more than 150 meters?
- How to reduce speed or stop when driving on a road covered with snow and ice?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?