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?

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 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.
Which of the following measures is correct for rescuing a person sustaining full-body burns?
The drivers, loaders and supercargoes responsible for dangerous chemicals transportation should all full understand the chemical characteristics, potential risks, features of the packaging containers and emergency measures for any unexpected accidents.
What is the meaning of this sign?
What is the meaning of this sign?
When a motor vehicle temporarily stops at night, which lamp should be turned on?
What is the meaning of this sign?
What is the meaning of this sign?
How to ensure motor vehicles have sufficient power when driving uphill?
What is the meaning of this sign?
The article that cannot be used to stop bleeding by dressing is _________.
What is the meaning of this sign?
What should be done by the driver who intends to overtake but the motor vehicle in front neither reduces its speed nor allows the right of way?
What is the meaning of this sign?
When following other vehicles on a foggy day, what should the driver do?
What is the meaning of this sign?