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124. What influence does smoking have upon driving?
A. Harmful for safe driving
B. Increase concentration
C. Help relaxation
D. No effect on driving
Answer：A
Previous question: 123. Which of the following is a bad habit when changing lanes?
Next question: 125. When driving on a long downhill road, which is the best way to control the speed?
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
- When rescuing a person sustaining full-body burns the rescue personnel may spray cool water to his body to put out the fire.
- What is the meaning of this sign?
- When a motor vehicle encounters an accident, the driver should pay attention to whether there is fuel leakage, pipeline rupture, so as avoid accidents.
- 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?
- When evading an emergency, except for being calm what principle should be held by drivers?
- When following other vehicles on a foggy day, what should the driver do?
- When encountering an obstacle on one side of the road, what should vehicles do as they approach each other?
- What is the meaning of this sign?
- When rescuing the persons who are losing blood, it is necessary to ______ first.
- Which lamp should be used when motor vehicles pass hrough an intersection at night where there is no traffic light signal?
- When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
- When two vehicles approach each other on a foggy day, what is the best method of safe driving?
- What is the main impact of foggy weather on safe driving?
- When removing a wounded person suffering spinal fracture, the rescuer should never help the wounded person to walk. He may be carried away with a soft stretcher.
- The first-aid measure to rescue a poisoned person is to _______.
- What is the meaning of this sign?