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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
- When rescuing a wounded person suffering from bone fracture, which of the following should be kept in mind?
- When there is no bandage for rescuing a wounded person, which of the following measures is wrong?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- When a wounded person suffering burns is thirsty, he may drink a small quantity of slightly salty water.
- What is the meaning of this sign?
- When evading an emergency, except for being calm what principle should be held by drivers?
- When the wounded person is suffering main artery bleeding, where should the rescue personnel press by thumb to stop the bleeding?
- How to ensure motor vehicles have sufficient power when driving uphill?
- 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?
- When encountering an obstacle on one side of the road, what should vehicles do as they approach each other?
- When a motor vehicle encounters an accident, the driver should pay attention to whether there is fuel leakage, pipeline rupture, so as avoid accidents.
- Which one of the following measures is correct when a motor vehicle intends to overtake but the vehicle infront refuses to yield?
- When putting out a fire disaster that gives out erosive steam or poisonous gas, the firefighters should wear gas masks and other related protective articles and should operate from the windward side.