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 driving on a long downhill road, which is the best way to control driving speed?
When discovering animals crossing the expressway on the highway, the driver should not drastically turn to evade.
What needs attention when a motor vehicle drives on a road covered with ice and snow?
Which of the following measures is incorrect when a motor vehicle stops?
What is the meaning of this sign?
When driving on road sections where safe sight distance is affected, such as the top of a ramp, what should drivers do to ensure safety?
What is the meaning of this sign?
What is the meaning of this sign?
What is the meaning of this sign?
Which of the following is a bad habit when changing lanes?
What is the meaning of this sign?
What is the meaning of this sign?
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?
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.