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.

2024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 2024 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 the wounded person is suffering main artery bleeding, where should the rescue personnel press by thumb to stop the bleeding?
What is the meaning of this sign?
When removing a wounded person suffering spinal fracture, the rescuer should never help the wounded person to walk. He may be carried away with a soft stretcher.
Dangerous chemicals possess the characteristics of explosion, inflammation, poison, erosion and radiation.
What is the meaning of this sign?
When a wounded person is under the wheel or cargo, the wrong method is to pull the limbs of the wounded.
When rescuers enter the scene to rescue the wounded after harmful gas leakage caused by traffic accidents, they must wear air respirators or cover their mouth and nose with wet towels.
When a wounded person suffering burns is thirsty, he may drink a small quantity of slightly salty water.
When a motor vehicle encounters a burning phenomenon, it should leave the vehicle quickly so as not to cause injury or asphyxia to the respiratory tract.
Rescue personnel should check the breath of the unconscious person before applying any other emergency treatment.
Which of the following is an inflammable solid material?
Once inflammable gas causes a fire disaster, it should be put out with water in good time.
When there is no bandage for rescuing a wounded person, which of the following measures is wrong?
When discovering animals crossing the expressway on the highway, the driver should not drastically turn to evade.
When rescuing a wounded person in coma, it is necessary to take warm-keeping measures to prevent heat loss.
When there is bleeding at the bone fracture of a wounded person, the first thing to do is to keep it in position before stopping the bleeding and dress the wound.