问题 问答题

什么是超温和过热,两者之间有什么关系?

答案

参考答案:超温或过热就是在运行中,金属不温度超过金属允许的额定温度。两者之间的关系:超温与过热在概念上是相同的。所不同的是,超温指运行中出于种种原因,使金属的管壁温度超过所允许的温度,而过热是因为超温所致使管子爆管,也就是说超温是过热的原因,过热是超温的结果。

选择题
听力题

B.根据短文内容及首字母提示,填写所缺单词,使短文意思完整。每空限一词。

One day, an old couple around the age of 70 walked into a lawyer’s office. They were there to get a divorce(离婚). The lawyer(律师) was very puzzled. A  1  having a chat with them, he got their story.

This couple had been quarrelling in their 40 years of marriage and nothing ever seemed to go right. They stayed together because of their children. Now all their children have grown up and have their o  2  families. There’s nothing else the old couple have to w  3  about. All they want is to live their own life, so both have agreed on a divorce.

The lawyer was having a hard time trying to get papers done. He couldn’t understand why the old couple w  4   a divorce. While they were signing the papers, the wife told the husband, “ I really love you, but I really can’t carry on any more.”

“It’s Ok, I understand,” said the husband. Looking at this, the lawyer suggested a d   5   together, just the three of them. The wife thought, why not, since they were still going to be f  6  .

The first dish was roasted chicken. At once, the old man took the chicken leg and gave it to the old lady. “Take this, it’s your f  7  .

Looking at this, the lawyer thought maybe here was a chance, but the wife looked

u  8   when she answered, “This is the problem. You always think so highly of yourself and never think about how I feel. Don’t you know that I h  9  chicken legs?”

Little did she know that, over the years, the husband had been trying many d  10  ways to please her; little did she know that chicken legs were her husband’s favourite.