凝泵出力下降时如何处理？_爱下问搜题

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问题问答题简答题

凝泵出力下降时如何处理？

答案

参考答案：

（1）立即派人就地核对凝汽器实际水位，玻璃管水位计与集控室内CRT画面水位指示，发现水位低应增开凝输泵，开启旁路门增加补水，将水位补至正常。

（2）就地检查密封水压力、泵体振动是否正常，可适当提高密封水压力。

（3）若凝结水泵泵体有空气，打开凝结水泵出口抽空气门，抽空气后关闭。

（4）值班员全面检查CRT上凝泵各监视参数（电流、出口压力、轴承温度）是否异常。

（5）严密监视除氧器水位，做好机组减负荷的准备。若凝泵出口压力下降较快，应启动备用泵，停止故障泵，通知检修检查处理。

选择题

梁启超在谈到哥伦布发现新大陆时发出这样的感慨：哥伦布之后，有无数哥伦布；郑和下西洋之后，竞无第二个郑和。造成这种现象的根本原因是（）

A．西方的航海技术远比中国先进

B．明朝的国力已远远落后西方国家

C．自然经济自给自足的特性决定的

D．中国热爱和平西方热衷海外殖民

完形填空

As a child, I was truly afraid of the dark and of getting lost; these fears were very real and caused me some uncomfortable moments.
Maybe it was the strange 26 things looked and sounded in my familiar room at night that 27 me so much. There was never total 28 , but a streetlight or passing car lights 29 clothes hung over a chair take on(呈现) the 30 of a wild animal. Out of the corner of my 31 , I saw the curtains seem to move when there was no 32 . A tiny sound in the floor would seem a hundred times louder than in the daylight. My 33 would run wild, and my heart would beat fast. I would 34 very still so that the “enemy” would not discover me.
Another of my childhood fears was that I would get lost, 35 on the way home from school. Every morning I got on the school bus right near my home .That was no 36 . After school, 37 , when all the buses were 38 up along the street, I was afraid that I’d get on the wrong one and be taken to some 39 neighborhood. On school or family trips to a park or a museum, I wouldn’t let the leaders out of my 40 .
Perhaps one of the worst fears 41 all I had as a child was that of not being liked or 42 by others. Being popular was so important to me 43 , and the fear of not being liked was a 44 one.
One of the processes(过程) of growing up is being able to 45 and overcome(克服) our fears. Understanding the things that frightened us as children helps us achieve greater success later in life.

C．imagination