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

Rescue personnel should check the breath of the unconscious person before applying any other emergency treatment.
Which one of the following measures is correct when a motor vehicle intends to overtake but the vehicle infront refuses to yield?
When a motor vehicle encounters a burning phenomenon, it should leave the vehicle quickly so as not to cause injury or asphyxia to the respiratory tract.
What is the meaning of this sign?
When rescuing the persons who are losing blood, it is necessary to ______ first.
Which of the following is a bad habit when changing lanes?
The article that cannot be used to stop bleeding by dressing is _________.
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.
When driving on a long downhill road, which is the best way to control the speed?
What is the meaning of this sign?
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.
When a motor vehicle encounters an accident, the driver should pay attention to whether there is fuel leakage, pipeline rupture, so as avoid accidents.
When rescuers enter the scene to rescue the wounded after harmful gas leakage caused by traffic accidents, they must wear air respirators or cover their mouth and nose with wet towels.
In emergencies, people¡¯s life safety should always be put in the first place.
What influence does smoking have upon driving?
What is the meaning of this sign?