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?
What is the meaning of this sign?
What should motor vehicle drivers do when approaching an oncoming vehicle on a frozen road?
What should be checked before driving?
When approaching a vehicle on a narrow slope, which one of the following ways is correct?
What is the meaning of this sign?
When a motor vehicle stops temporarily in a rainy day,which lamp should be turned on?
When the tire pressure is too low, what can happen when driving at a high speed?
What is the meaning of this sign?
What kind of harmful effect will be brought about by continuously using the foot brake on a long downhill road?
What is the most frequent problem for driving on a muddy road?
When rescuing a wounded person suffering spinal fracture, it is necessary to ___________.
What is the meaning of this sign?
What is the meaning of this sign?
What is the meaning of this sign?