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147. When a motor vehicle passes over an overflowing bridge, what should the driver do after stopping and observing closely?
A. Change to a high gear and pass rapidly
B. Constantly observe the changes of the flow
C. Prepare to stop at any time
D. Change to a low gear and pass through at a constant speed
Answer：D
Previous question: 146. What is the most frequent problem for driving on a muddy road?
Next question: 148. When evading an emergency, except for being calm what principle should be held by drivers?
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 should the driver do to follow other motor vehicles on a mountain road?
- 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?
- 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?
- What is the meaning of this sign?
- When a motor vehicle stops temporarily in a rainy day,which lamp should be turned on?
- What is the meaning of this sign?
- When following other vehicles on a foggy day, what should the driver do?
- What is the meaning of this sign?
- Gun powder, explosives and detonating powder belong to which of the following dangerous chemicals?
- When the tire pressure is too low, what can happen when driving at a high speed?
- What is the meaning of this sign?
- 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.
- What should motor vehicle drivers do when approaching an oncoming vehicle on a frozen road?
- What is the meaning of this sign?