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

What is the most frequent problem for driving on a muddy road?
What is the meaning of this sign?
When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
When carrying the wounded persons in coma or in danger of suffocation, they should lie face up.
What is the meaning of this sign?
What is the meaning of this sign?
How to reduce speed or stop when driving on a road covered with snow and ice?
When the wounded person is suffering main artery bleeding, where should the rescue personnel press by thumb to stop the bleeding?
How to ensure motor vehicles have sufficient power when driving uphill?
When a motor vehicle temporarily stops at night, which lamp should be turned on?
What is the meaning of this sign?
Which of the following measures is incorrect when a motor vehicle stops?
What is the meaning of this sign?
What is the meaning of this sign?
The first-aid measure to rescue a poisoned person is to _______.
When rescuing a wounded person who has been poisoned by toxic gas, the first measure is to send him to a place where air is fresh so that he will not continue to be poisoned.