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

Which lamp should be used when motor vehicles pass hrough an intersection at night where there is no traffic light signal?
What should the driver do to follow other motor vehicles on a mountain road?
When rescuing a wounded person in coma, it is necessary to take warm-keeping measures to prevent heat loss.
What kind of harmful effect will be brought about by continuously using the foot brake on a long downhill road?
How should lamps be used by the motor vehicle driver who follows a vehicle on a road section at night where he street light condition is good?
What needs attention when a motor vehicle drives on a road covered with ice and snow?
What is the meaning of this sign?
What is the meaning of this sign?
When there is no bandage for rescuing a wounded person, which of the following measures is wrong?
When driving on a long downhill road, which is the best way to control the speed?
When rescuing a wounded person suffering from bone fracture, which of the following should be kept in mind?
What is the most frequent problem for driving on a muddy road?
When approaching another vehicle at night, why should the driver alternate between high-and-low-beam at a distance more than 150 meters?
What is the meaning of this sign?
What is the meaning of this sign?
What is the meaning of this sign?