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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
- 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?
- What is the meaning of this sign?
- When a wounded person is under the wheel or cargo, the wrong method is to pull the limbs of the wounded.
- What is the meaning of this sign?
- What is the meaning of this sign?
- How will the adhesive force of road change when speed increases on a damp and slippery road?
- When a wounded person suffering burns is thirsty, he may drink a small quantity of slightly salty water.
- When driving on a long downhill road, which is the best way to control driving speed?
- What is the meaning of this sign?
- How to ensure safe driving at night?
- When approaching another vehicle at night, why should the driver alternate between high-and-low-beam at a distance more than 150 meters?
- 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.
- In emergencies, people¡¯s life safety should always be put in the first place.
- What is the meaning of this sign?