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99. What is the meaning of this sign?
A. No honking the tweeter
B. No honking the woofer
C. Should honk
D. No honking
Answer：C
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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
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- Which of the following method is correct to rescue an unconscious person?
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- When rescuing a wounded person in coma, it is necessary to take warm-keeping measures to prevent heat loss.
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- When rescuing the injured, it is necessary to ________.
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- When a wounded person suffering burns is thirsty, he should only drink plain boiled water.
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- 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 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.
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- What is the meaning of this sign?