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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?
- How will the adhesive force of road change when speed increases on a damp and slippery road?
- What is the meaning of this sign?
- When carrying the wounded persons in coma or in danger of suffocation, they should lie face up.
- What is the meaning of this sign?
- The wrong method to rescue a poisoned person in a traffic accident is to ______.
- When a motor vehicle passes over an overflowing bridge, what should the driver do after stopping and observing closely?
- When a wounded person suffering burns is thirsty, he may drink a small quantity of slightly salty water.
- 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 driving in rain and encountering pedestrians with umbrellas or wearing raincoats, what should be done by motor vehicle drivers in order to yield?
- What should the driver do to follow other motor vehicles on a mountain road?
- 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 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.
- When using splints, sticks or tree branches to keep the unexposed bones in position, it is necessary that these things should exceed the upper and lower joints of the wound.