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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?
2025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 2025 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 be done by the driver who intends to overtake but finds that the vehicle in front is also overtaking?
- What kind of harmful effect will be brought about by continuously using the foot brake on a long downhill road?
- When the tire pressure is too low, what can happen when driving at a high speed?
- When approaching another vehicle at night, why should the driver alternate between high-and-low-beam at a distance more than 150 meters?
- What is the meaning of this sign?
- What is the most frequent problem for driving on a muddy road?
- 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?
- What is the meaning of this sign?
- When a wounded person is under the wheel or cargo, the wrong method is to pull the limbs of the wounded.
- What should the driver do when he/she encounters an oncoming ambulance in the same lane?
- When encountering an obstacle on one side of the road, what should vehicles do as they approach each other?
- When a gas tanker is leaking heavily, which of the following measures is wrong?
- When evading an emergency, except for being calm what principle should be held by drivers?
- What is the meaning of this sign?
- When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?