Engine Repair (A1)Câu 13 / 120
The main function of engine oil, besides lubrication, includes all of the following EXCEPT:
a.Cooling internal components
b.Generating spark for combustion
c.Cleaning and suspending contaminants
d.Sealing between rings and cylinder walls
Giải thích
Engine oil lubricates, cools, cleans, and helps seal the rings, but it plays no role in generating spark. Spark is produced by the ignition system. Detergent and dispersant additives keep contaminants suspended until the filter or an oil change removes them.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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