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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?
- When a gas tanker is leaking heavily, which of the following measures is wrong?
- What is the meaning of this sign?
- How should lamps be used when motor vehicle drivers pass through a two-way tunnel?
- When the wounded person is suffering main artery bleeding, where should the rescue personnel press by thumb to stop the bleeding?
- Which lamp should be turned on when motor vehicles pass through a road section at night where the street light condition is good?
- Rescue personnel should check the breath of the unconscious person before applying any other emergency treatment.
- When evading an emergency, except for being calm what principle should be held by drivers?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?