试题与答案

关于活塞収动机电嘴积碳，下列说法哪种正确？（） A.是因为混合气过富油造成的； B

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题型：单项选择题

题目：

关于活塞収动机电嘴积碳，下列说法哪种正确？（）

A.是因为混合气过富油造成的； 

B.是因为发动机气缸头温度太高而造成的；

C.是因为发动机内燃烧温度太高造成的。

答案：

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