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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
- 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 a wounded person suffering burns is thirsty, he should only drink plain boiled water.
- What is the meaning of this sign?
- When rescuing a wounded person who has been poisoned by toxic gas, the first measure is to send him to a place where air is fresh so that he will not continue to be poisoned.
- What is the meaning of this sign?
- Which of the following method is correct to rescue an unconscious person?
- When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
- How should a motor vehicle follow the other vehicle In front when driving on a road covered with ice and snow?
- When rescuing the persons who are losing blood, it is necessary to ______ first.
- When rescuing a person sustaining full-body burns the rescue personnel may spray cool water to his body to put out the fire.
- Once inflammable gas causes a fire disaster, it should be put out with water in good time.
- What influence does smoking have upon driving?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?