【判断题】
BCH-2型差动继电器的不平衡电压与负荷电流成反比。
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整流式全阻抗继电器的动作条件是：后备保护
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利用正常运行与故障时各电气间的差别来实现的。
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当主保护或断路器拒动时起后备作用的保护称为辅助保护。
【判断题】
过电流保护常用的接线方式是两相不完全星形接线。
【判断题】
采用定时限过电流保护，越靠近电源处的保护装置其动作时限越长。
【判断题】
定时限过电流保护是指不管故障电流超过整定值多少，其动作时限总是一定的保护。
【判断题】
定时限过电流保护只能用在双电源供电线路上。
【判断题】
瞬时电流速断保护的缺点是存在两端死区。
【判断题】
瞬时电流速断保护的动作电流比过电流保护的动作电流大得多。
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低电压闭锁过电流保护的动作电流是按正常持续负荷电流整定的。
【判断题】
瓦斯保护是油箱内部保障的主保护，还可以反映油面的降低。
【判断题】
变压器差动保护投入前要不带负荷测相量.差电压。
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对于无人值班变电所，过负荷保护作用于自动减负荷或跳闸。
【判断题】
变压器中性点接地开关合上前其中性点零序电流（电压）保护应该投入。
【判断题】
当变压器中性点采用直接接地的运行方式时，其接地保护一般采用零序电流保护。
【判断题】
铁磁谐振过电压值的大小与变压器铁芯饱和程度有关。
【判断题】
超过正常运行电压且可使电力系统绝缘或保护设备损坏的电压升高称为过电压。
【判断题】
为防止直击雷的危害，送电线路通常装设避雷线。
【判断题】
加装避雷针或避雷线可以限制感应雷过电压。
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除特殊情况外，目前世界上大部分国家规定阀型避雷器标准雷电流幅值都是5 kA。
【判断题】
直击雷过电压的计算公式为：u=iRch+Loh
【判断题】
感应雷过电压的幅值与雷电主放电电流幅值成反比。
【判断题】
在变压器的门型构架上装设避雷针，可避免在其外壳上出现高电压，损坏其绝缘。
【判断题】
埋人地中并直接与大地接触的物体称为接地体。
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配电盘与控制盘的框架.移动式用电器具的底座和外壳必须接地。
【判断题】
负序电流滤过器输入端加入正序电流时输出负序电流。
【判断题】
功率方向继电器是反映接入继电器的电流和电压大小关系的。
【判断题】
变电所变压器常见预告信号有过负荷.油温过高.瓦斯动作信号。
【判断题】
“掉牌未复归”光字只有在全部信号继电器的掉牌复位后才能熄灭。
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历史上最广泛、最彻底、最深刻的，不同于以往一切革命的最新类型的革命是 ___
A. 封建革命
B. 无产阶级革命
C. 资产阶级革命
D. 农民起义
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explore ，transmit， resource， emerge，yield， pose， assume， confidence，inherit， comprehensive
Given the chance to show his ability, he regained [ ]and began to succeed in school
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The new government has committed to [ ] emissions of greenhouse gases
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take a toll on，in other words ，drop out，in turn ，at risk (of) ，interfere with，be accustomed to， contribute to，cut back on ，hold on to
My parents do not object to my taking part-time jobs, but they remind me not to let them [ ] my school work
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Anger, worry, disappointment, these negative emotions [ ] your heart, brain and body
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If a person adopts an unhealthy lifestyle, he will surely be [ ]developing diseases.
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take a toll on，in other words ，drop out，in turn ，at risk (of) ，interfere with，be accustomed to， contribute to，cut back on ，hold on to
Most people were ready to give up on him when he [ ] of school, but later he returned and earned his degree
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Drinking too much can increase the risk of developing high blood pressure, which [ ] can lead to heart attack or stroke
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take a toll on，in other words ，drop out，in turn ，at risk (of) ，interfere with，be accustomed to， contribute to，cut back on ，hold on to
Low-cost airlines are emerging all over Asia; this will [ ]the development of the worlds air-travel market as a whole
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When you move to a new country, you may find the food there strange and you may miss the familiar smells of the food [ ] in your country
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Although he kept trying and failing, I always [ ] the belief that he would succeed one day.
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controversial，assess， resolve，decrease，alter，abandon，indicate，undermine，compromise， conventional
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open the door to，In advance，all at once，reap the benefits (of)， make the most of，over time， get by， stand a chance (of)，remind of， take pleasure in，
Experts say our company is amazing in that sales have been increasing steadily [ ]
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make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
After 10 years of full-time training, she has,finally [ ] as a professional dancer.
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make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
[ ], what is the point in taking part in the competitive event if the result is only to prove how incompetent you are?,
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free of/ from ，after all，straighten up， throw away
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make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
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make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
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make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
Megan and John realized that their house was too messy for a new baby, so they decided to [ ] their house before the baby was born
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make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
Jennifer couldn't [ ] her tears when she saw the sick children at a new blood cancer center in Virginia
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make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
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advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
Fortunately, the accident didn't [ ] many people, for there was little traffic at that hour.
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advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
She[ ] her ambition of becoming a fashion designer after years of hard work
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advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
They kept on trying their best to develop
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advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
As music plays an important role in our life, many music teachers and educators [ ] taking up a musical instrument at a young age
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This rule should be entirely clear in the minds of everyone and should not be misunderstood under any [ ]
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My daughter was shy; she was afraid to ask questions,[ ] to questions in class,or talk with other children
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I got from him only a letter, which was put on my office desk; [ ] to the receipt of this letter I have never heard from him
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advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
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Darwin's theory of evolution remains[ ] partly because it challenges the religious belief that God created man
