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 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 rescuing a wounded person suffering from bone fracture, which of the following should be kept in mind?
When rescuing a person sustaining full-body burns the rescue personnel may spray cool water to his body to put out the fire.
What is the meaning of this sign?
Which of the following measures is correct for rescuing a person sustaining full-body burns?
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 rescuing a wounded person in coma, it is necessary to take warm-keeping measures to prevent heat loss.
When discovering animals crossing the expressway on the highway, the driver should not drastically turn to evade.
When a wounded person is under the wheel or cargo, the wrong method is to pull the limbs of the wounded.
Which of the following is an inflammable solid material?
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.
The first-aid measure to rescue a poisoned person is to _______.
The wrong method to rescue a poisoned person in a traffic accident is to ______.
When a wounded person suffering bone fracture in the thigh, shank and spine, it is necessary to keep the fracture in position and refrain to move the wounded person.
When there is bleeding at the bone fracture of a wounded person, the first thing to do is to fix the wounded part in position, then stop the bleeding and dress the wound.