变压器油枕与防爆管之间为什么要用小管连接？_爱下问搜题

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问题问答题简答题

变压器油枕与防爆管之间为什么要用小管连接？

答案

参考答案：

通气式防爆管如不与大气相通或用小管与油枕连接，则防爆管将是密封的，因此，当油箱内的油因油温变化而膨胀或收缩时，可能造成防爆膜破裂或气体断电器误动作。

单项选择题

女性，50岁，渐感气短胸闷1个月入院，查肺功能示VC%为60%，FEV_1.0/FVC%为85%，MVV为70%，RV/TLC%为30%，VC25%及VC50%均为70%，TLC为3500ml，下列最可能的是（）

A.阻塞性通气功能障碍

B.限制性通气功能障碍

C.混合性通气功能障碍

D.小气道功能受损

E.大气道功能受损

完形填空

One of my fondest Christmas memories was also one of our family’s bleakest（最令人沮丧的）.We were just little kids , and on Christmas Day mom   21 us all around her to tell us , 22 ,that there would be no presents because all we really wanted was to 23 for our daddy.He was very sick . I don’t remember anything else except four little girls surrounding my mother, crying   24 a miracle（奇迹）
At that very moment ,someone   25 loudly on the door. 26 Behind him was a merry group of soldiers from the Army base where my father   27 as a minister . News had 28   that we were in trouble ,and his colleagues knew we needed some 29 .
With all the excitement ,even my dad 30   in a blanket to keep warm , came down and sat in front of a roaring fire in our room to watch his children be 31 by good Samaritants（乐善好施的人）. The presents were unwrapped , and we girls 32   packages and found a doll each and four board games.
What is 33   to me is that I don’t even remember what sickness my father was suffering from.I 34   remember an evening of laughter and 35   There were no expensive toys but    36 moments of friendship and fun given by young men who knew that a family was having a(n) 37 time . They gave their time and their 38 to little children who needed to laugh.
The most important thing in life aren’t things . And what about the true 39   of holidays ? I hope we all are able to remember a thing about the holidays that stirs(搅动)our heart , that isn’t really a thing at all, but the smile on a child’s face because we take a moment to hug or   40 a tear.

D． recommended

C． in silence

D． in surprise

C． distributed

D． disappeared

D． entertained

B． frightening

D． encouraging

D． beneficial

C． write about

D． burst into