33. 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.

Answer：Y

Previous question: 32. Dangerous chemicals possess the characteristics of explosion, inflammation, poison, erosion and radiation.

Next question: 34. When a gas tanker is leaking heavily, which of the following measures is wrong?

2026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 2026 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?
What is the meaning of this sign?
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.
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?
When rescuing a wounded person suffering spinal fracture, it is necessary to ___________.
When a motor vehicle temporarily stops in fog, which lamp should be turned on?
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.
What is the meaning of this sign?
How to ensure motor vehicles have sufficient power when driving uphill?
What kind of harmful effect will be brought about by continuously using the foot brake on a long downhill road?
What is the meaning of this sign?
Which of the following method is correct to rescue an unconscious person?
In emergencies, people¡¯s life safety should always be put in the first place.
What is the meaning of this sign?