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27. Gun powder, explosives and detonating powder belong to which of the following dangerous chemicals?
A. Oxidizing materials
B. Inflammable solid materials
C. Explosives
D. Self-igniting articles
Answer：C
Next question: 28. Matches, sulfur and red phosphorus are _________.
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
- When putting out a fire disaster that gives out erosive steam or poisonous gas, the firefighters should wear gas masks and other related protective articles and should operate from the windward side.
- What is the meaning of this sign?
- What is the meaning of this sign?
- Matches, sulfur and red phosphorus are _________.
- Which of the following is an inflammable solid material?
- What is the meaning of this sign?
- What is the meaning of this sign?
- When rescuing a wounded person in an emergency, it is necessary to firstly stop the bleeding by compression before other methods are taken according to the conditions of bleeding.
- How to reduce speed or stop when driving on a road covered with snow and ice?
- Gun powder, explosives and detonating powder belong to which of the following dangerous chemicals?
- When rescuing a wounded person suffering from bone fracture, which of the following should be kept in mind?
- When rescuing the persons who are losing blood, it is necessary to ______ first.
- What is the meaning of this sign?
- Rescue personnel should check the breath of the unconscious person before applying any other emergency treatment.
- When a motor vehicle temporarily stops at night, which lamp should be turned on?
- How should a motor vehicle follow the other vehicle In front when driving on a road covered with ice and snow?