40. 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.

Answer：Y

Previous question: 39. The wrong method to rescue a poisoned person in a traffic accident is to ______.

Next question: 41. 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.

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?
Which one of the following measures is correct when a motor vehicle intends to overtake but the vehicle infront refuses to yield?
What is the meaning of this sign?
When a motor vehicle passes over an overflowing bridge, what should the driver do after stopping and observing closely?
When there is bleeding at the bone fracture of a wounded person, the first thing to do is to fix the wounded part in position, then stop the bleeding and dress the wound.
What should be done by the driver who intends to overtake but finds that the vehicle in front is also overtaking?
When driving on a long downhill road, which is the best way to control driving speed?
The wrong method to rescue a poisoned person in a traffic accident is to ______.
What should be done by the driver who intends to overtake but the motor vehicle in front neither reduces its speed nor allows the right of way?
What is the meaning of this sign?
The article that cannot be used to stop bleeding by dressing is _________.
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?