试题与答案

对称平衡式往复式压缩机的气缸内留有四个注油口,分别位于气缸的上下前后。()

题型:判断题

题目:

对称平衡式往复式压缩机的气缸内留有四个注油口,分别位于气缸的上下前后。()

答案:

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