试题与答案

空负荷试运转结束后,应立即进行必要的放气、排水或排污及必要的()涂油。 A.防锈 B

题型:单项选择题

题目:

空负荷试运转结束后,应立即进行必要的放气、排水或排污及必要的()涂油。

A.防锈

B.防水

C.防磨损

D.防冻

答案:

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We all have days when we are down, tired and unhappy. That’s OK. You need days like this, or how would you know you are happy? You’ll enjoy your good days even more when you have a few bad days. Even if sadness is a part of life, let’s try to make it small. Here are a few simple ways to help you feel better when you are feeling sad.
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