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问题 单项选择题

在正常维护条件下，单台设备强度不足、主要电气性能指标下降且无法恢复的设备占运用总数量的（）及以上的应进行系统更新改造。

A、20%

B、30%

C、40%

D、50%

答案

参考答案：C

写作题

Did you get any help from others? Or did you give any help to people when they needed? Tell your story of getting help or giving help. Your story should be organized like this:

Part l: Tell us when, where, who and how.

Part 2: Describe your feelings at that time.

请以“Everyone Needs Help”为题，用英语写一篇短文。内容包括上述要点。

注意：1.词数80左右。短文要点表达不分先后，可适当发挥，使短文连贯、通顺；开头已为你写好，不计入总词数；

2.短文中不要出现具体的学校姓名和人名。

Everyone Needs Help

In our daily life, we meet different kinds of problems. Everyone needs help, I think. And only those who are willing to help others will also be helped.

_____________________________________________________________________________

_____________________________________________________________________________

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单项选择题

发电机冷却水中断超过（）保护拒动时，应手动停机。

A.60s

B.30℃

C.90℃

D.120℃
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