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29. Which of the following is an inflammable solid material?
A. Matches
B. Fireworks
C. Calcium carbide
D. Explosives
Answer：A
Previous question: 28. Matches, sulfur and red phosphorus are _________.
Next question: 30. Once inflammable gas causes a fire disaster, it should be put out with water in good time.
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 carrying the wounded persons in coma or in danger of suffocation, they should lie face up.
- When rescuing a person sustaining full-body burns the rescue personnel may spray cool water to his body to put out the fire.
- What is the most frequent problem for driving on a muddy road?
- What is the meaning of this sign?
- Which of the following measures is incorrect when a motor vehicle stops?
- 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/her to a place with fresh air so that he/she will not continue to be poisoned.
- What is the meaning of this sign?
- When rescuing the injured, it is necessary to ________.
- What is the meaning of this sign?
- What kind of harmful effect will be brought about by continuously using the foot brake on a long downhill road?
- What is the meaning of this sign?
- Which of the following measures is correct for rescuing a person sustaining full-body burns?
- How to reduce speed or stop when driving on a road covered with snow and ice?
- When following other vehicles on the uphill section of a mountain road, what should the driver do if the vehicle in front stops?
- What is the meaning of this sign?