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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 _________.
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?
- How should a motor vehicle follow the other vehicle In front when driving on a road covered with ice and snow?
- When evading an emergency, except for being calm what principle should be held by drivers?
- How to ensure motor vehicles have sufficient power when driving uphill?
- What is the meaning of this sign?
- 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?
- What is the meaning of this sign?
- What influence does smoking have upon driving?
- When driving in rain and encountering pedestrians with umbrellas or wearing raincoats, what should be done by motor vehicle drivers in order to yield?
- When a wounded person suffering burns is thirsty, he should only drink plain boiled water.
- What is the meaning of this sign?
- Which of the following is an inflammable solid material?
- When carrying the wounded persons in coma or in danger of suffocation, they should lie face up.
- What should motor vehicle drivers do when approaching an oncoming vehicle on a frozen road?
- Which lamp should be used when motor vehicles pass hrough an intersection at night where there is no traffic light signal?