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?
When a gas tanker is leaking heavily, which of the following measures is wrong?
What is the meaning of this sign?
When a wounded person suffering burns is thirsty, he may drink a small quantity of slightly salty water.
What is the meaning of this sign?
Which of the following is an inflammable solid material?
What is the meaning of this sign?
What should motor vehicle drivers do when parking temporarily on a rainy day?
At the scene of a traffic accident, once there is a leakage of toxic and harmful substances, people must be evacuated at the first time and alarmed immediately.
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 _______.
What is the meaning of this sign?
What is the most frequent problem for driving on a muddy road?
When the tire pressure is too low, what will happen if the tire changes its shape in waves and increases in temperature due to fast movement?
Which one of the following measures is correct when a motor vehicle intends to overtake but the vehicle infront refuses to yield?