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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?
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
- 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?
- When using splints, sticks or tree branches to keep the unexposed bones in position, it is necessary that these things should exceed the upper and lower joints of the wound.
- What is the meaning of this sign?
- 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.
- Which one of the following measures is correct when a motor vehicle intends to overtake but the vehicle infront refuses to yield?
- Which of the following measures is correct for rescuing a person sustaining full-body burns?
- When a wounded person is under the wheel or cargo, the wrong method is to pull the limbs of the wounded.
- What should be done by the driver who intends to overtake but finds that the vehicle in front is also overtaking?
- Gun powder, explosives and detonating powder belong to which of the following dangerous chemicals?
- Which of the following is an inflammable solid material?
- What is the meaning of this sign?
- 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?
- How should lamps be used when a motor vehicle meets an oncoming bicycle on a narrow road or a narrow bridge at night?