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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 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 lamp should be turned on when motor vehicles pass through a road section at night where the street light condition is good?
- What is the meaning of this sign?
- When rescuing a wounded person in coma, it is necessary to take warm-keeping measures to prevent heat loss.
- The wrong method to rescue a poisoned person in a traffic accident is to ______.
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What should be done by the driver who intends to overtake but finds that the vehicle in front is also overtaking?
- What is the meaning of this sign?
- Once inflammable gas causes a fire disaster, it should be put out with water in good time.
- Which of the following is an inflammable solid material?
- Which lamp should be used when motor vehicles pass hrough an intersection at night where there is no traffic light signal?
- What is the meaning of this sign?
- The first-aid measure to rescue a poisoned person is to _______.