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【单选题】
当用示波器测试发动机时,1个气缸的击穿电压比正常的低,且火花持续时间比正常的长,其他气缸均正常,以下哪个原因可引起此类现象?A.
火花塞积炭
B.
火花塞电缆线端腐蚀
C.
分电器转子磨损
D.
空气与燃油混合气稀
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What does the man imply when he tells the woman not to get her hopes up?
A.
The director probably isn't able to make an exception.
B.
The director probably won't see her.
C.
The director usually isn't very helpful.
D.
The director is not responsible for taking care of part-time students.
【单选题】He claimed that it was her rudeness that______him to strike her.
A.
proposed
B.
protected
C.
provided
D.
provoked
【简答题】听对话，回答问题。 1. What is Rose busy with? [ ] A. Her trip plan B. Her school exam C. Her summer program 2. Who will go camping with Rose? [ ] A. Bill B. Her sister C. Her classmate 3. How does Rose...
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