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31. When an erosive material catches fire, it should not be put out with water cannon.
Answer：Y
Previous question: 30. Once inflammable gas causes a fire disaster, it should be put out with water in good time.
Next question: 32. Dangerous chemicals possess the characteristics of explosion, inflammation, poison, erosion and radiation.
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 most frequent problem for driving on a muddy road?
- When rescuing a wounded person in an emergency, it is necessary to firstly stop the bleeding by compression before other methods are taken according to the conditions of bleeding.
- When following other vehicles on the uphill section of a mountain road, what should the driver do if the vehicle in front stops?
- What is the meaning of this sign?
- When two vehicles approach each other on a foggy day, what is the best method of safe driving?
- The article that cannot be used to stop bleeding by dressing is _________.
- Matches, sulfur and red phosphorus are _________.
- When carrying the wounded persons in coma or in danger of suffocation, they should lie face up.
- Which of the following measures is correct for rescuing a person sustaining full-body burns?
- What is the main impact of foggy weather on safe driving?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What needs attention when a motor vehicle drives on a road covered with ice and snow?
- Which of the following measures is incorrect when a motor vehicle stops?
- When evading an emergency, except for being calm what principle should be held by drivers?
- When rescuing a wounded person who has been poisoned by toxic gas, the first measure is to send him/her to a place with fresh air so that he/she will not continue to be poisoned.