一座66/10kV重要变电所,装有容量为16000kVA的主变压器两台,采用蓄电池直

题型:单项选择题

问题:

一座66/10kV重要变电所,装有容量为16000kVA的主变压器两台,采用蓄电池直流操作系统,所有断路器配电磁操作机构。控制、信号等经常负荷为2000W,事故照明负荷为1000W,最大一台断路器合闸电流为98A。请解答如下问题:

说明在下列关于变电所所用电源和操作电源以及蓄电池容量的选择的表述中,哪一项是不正确的?()

A.变电所的操作电源采用一组110V或220V固定铅酸蓄电池组或镉镍蓄电池组。作为充电、浮充电用的硅整流装置宜合用一套

B.变电所的直流母线,采用单母线或分段单母线的接线

C.变电所可装设一台所用变压器即可满足变电所用电的可靠性

D.变电所蓄电池组的容量按全所事故停电1h的放电容量及事故放电末期最大冲击负荷容量确定

考点:注册电气工程师供配电专业注册电气工程师供配电专业考试
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书面表达。
     假设你是某文杂志的“知心姐姐”(Agony Sister), Helen, 请阅读下面的这封求助信,并根据信的
内容写一封回信。
     要求:1. 80词左右;
               2. 文中不要出现作者本人的真实信息。 
    
Dear Helen,
     Last Sunday, my classmates and I went to the park. I wanted to take some photos. My father was
out at that time, so I took his camera without telling him. Unfortunately, the camera was out of my bag
and dropped on the ground when I was climbing the hill. It didn't work at all. I put it back quietly after I
returned home. And I haven't told him till now. when I face to my father, I feel terrible. What should I
do?
                                                                                                                                 Yours,
                                                                                                                                 David
Dear David 
     ______________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
                                                                                                                                        Best wishes,
                                                                                                                                                 Helen
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       托尔斯泰是一位文学巨匠,创作了世界文学中第一流的作品,其中____________、____________、____________三部长篇小说,代表了他的艺术高峰。

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不协调性宫缩乏力产科检查是()

A.下腹部有压痛

B.胎位触不清

C.胎心不规律

D.宫口扩张早期缓慢或停止

E.胎先露部下降延缓或受阻

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()是事物的整体在人脑中的反映。

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某施工企业资产负债表中列明固定资产原值为360万元,累计折旧为46万元。固定资产减值准备为4万元,则该企业固定资产净值应为( )万元。

A.310

B.314

C.318

D.356

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