试题与答案

一个四冲程内燃机的工作过程中,将内能转化为机械能的是__________冲程。若

题型:填空题

题目:

一个四冲程内燃机的工作过程中,将内能转化为机械能的是__________冲程。若每秒钟完成20个冲程,则该内燃机的飞轮每秒钟旋转      转,做功     次。

答案:

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