试题与答案

发动机冷却系的作用是（）完成一个工作循环。A、对缸体冷却 B、对缸盖冷却 C、保湿 D、使

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题型：单项选择题

题目：

发动机冷却系的作用是（）完成一个工作循环。

A、对缸体冷却

B、对缸盖冷却

C、保湿

D、使发动机保持在一定的温度范围

答案：

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