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30. Once inflammable gas causes a fire disaster, it should be put out with water in good time.
Answer：N
Previous question: 29. Which of the following is an inflammable solid material?
Next question: 31. When an erosive material catches fire, it should not be put out with water cannon.
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?
- What should be checked before driving?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What should the driver do to follow other motor vehicles on a mountain road?
- How to ensure motor vehicles have sufficient power when driving uphill?
- 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?
- 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 there is no bondage for rescuing a wounded person, towels, handkerchiefs, bed sheets and stockings can be used for dressing.
- What is the meaning of this sign?
- Once inflammable gas causes a fire disaster, it should be put out with water in good time.
- When a wounded person suffering burns is thirsty, he should only drink plain boiled water.
- When following other vehicles on the uphill section of a mountain road, what should the driver do if the vehicle in front stops?