【填空题】
当 UPS 工作电源整流器故障时,UPS 自动切至___经逆变器供电。
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直流
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蓄电池是一种储能设备,它能把___能转变为___能储存起来;使用时,又把___能转变为___,通过外电路释放出来。
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蓄电池在电厂中作为___和___的直流电源,具有电压稳定,供电可靠等优点。
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220V直流动力母线电压应经常保持在___。
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一组蓄电池的容量为 1200AH,若以 100A 的电流放电,则持续供电时间为___。
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110V直流母线电压应经常保持在___。
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充足电的铅蓄电池,如果放置不用,将逐断失去___,这种现象叫做蓄电池___。
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蓄电池正常处于___方式,事故情况下处于___方式。
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铅酸蓄电池在充电过程中,正极板有___析出,在负极板有___析出。
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蓄电池放电时,端电压逐渐下降,当电瓶端电压下降到___V 后,则应停止放电,这个电压称为放电___电压。
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110V直流控制母线电压应经常保持在___。
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直流母线并列前,必须检查两组母线___,正、负极性___。
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查找直流接地时天气不好时先拉___。
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直流母线发生接地时应询问相关专业有无___。
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瓦斯保护二次回路一点接地时,应将重瓦斯保护改投___位置。
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在通常情况下,电气设备不允许___运行,必要时可停用部分保护,但___不允许同时停用。
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运行中禁止打开保护装置柜门,禁止在集控室继保小室内使用___通讯设备。
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发电机定时限过负荷保护反映发电机___的大小。
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发电机定子绕组的过电压保护反映___的大小。
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发电机定时限负序过流保护反映发电机定子___的大小,防止发电机___过热。
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220KV线路重合闸正常投___位置。
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220KV线路运行中,两套重合闸只投入其中___。
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反映电流的过量而动作,并通过一定的延时来实现选择性的保护装置,称为___。
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电气二次设备是与一次设备有关的___、___、___、___和操作回路中所使用的设备。
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在变压器瓦斯保护动作跳闸的回路中,必须有___回路,用以保证有足够的时间使断路器___。
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自动调整励磁装置,在发电机正常运行或发生事故的情况下,能够提高电力系统的___稳定和___稳定。
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220KV线路重合闸单重方式是单相故障___,多相故障___。
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线路零序保护装置的动作时限必须按时间___原则来选择以保证动作的___性。
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220KV线路重合闸三重方式是任何故障___。
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距离保护是反映故障点到保护安装处的___距离并根据此距离的大小确定___时限的保护装置。
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220KV线路重合闸综重方式是单相故障___,多相故障___。
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220KV线路重合闸方式把手有四个位置:综重、___、___、停用。
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220KV母联保护屏充电过流保护,在220kV母线___时投入,充电正常后___。
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110kV 及以上的电力网中均采用___直接接地,最容易发生的故障是___短路。
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当 220kV 线路发生单相接地短路时保护装置动作,只跳开___线路两侧的断路器而___线路两侧的断路器不跳闸。
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当 220KV 线路发生相间短路故障时,___动作后,同时跳开线路两侧___相断路器。
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220KV母联保护屏跳母联开关启动母差失灵保护压板随___保护投退。
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如果 110kV 双端电源供电线路一端的重合闸投人___检定,而另一端则应投入___检定。
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220KV母差保护分裂压板在双母线运行母联开关___方式下投入。
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目前 110kV、220kV 采用最多的接地保护方式是由零序方向___和零序方向___组成三段或四段阶梯式保护。
【填空题】
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我国水资源的空间分布特点是___
A. 南丰北缺
B. 东北地区缺水最严重
C. 冬春季节少,夏秋季节多
D. 绝大部分地区水资源丰富
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大气的运动变化是由什么引起的。___
A. 冷热不均
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对细胞的概念,近年来比较普遍的提法是:有机体的___
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D. 生命活动的基本单位
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自然界的生物可以分为三大类,这就是___
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C. 动物、植物与昆虫
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香樟是一种在长江三角洲地区常见的树种,它是属于 ___
A. 常绿针叶树种
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D. 落叶阔叶树种
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老虎与豹是属于同一科大动物。下列动物中也属该科的是___
A. 马
B. 狼
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生物是人类不可缺少的“朋友”,但目前正遇到___
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被发现在南非的古沉积岩中,地球上最早出现的绿色植物是___
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植物、藻类利用叶绿素产生的光合作用过程中,在可见光的照射下,能将二氧化碳和水转化为有机物,释放出的是 ___
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B. 氮气
C. 氢气
D. 氯气
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呼吸作用是生物体内的有机物在细胞内经过一系列的氧化分解,在释放出能量的同时,最终生成的主要是 ___
A. 氧气
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C. 氮气
D. 不知道
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晚上,植物与动物都不应该放入卧室内,要将其移到卧室外,这是因为它们会降低卧室内的___
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D. 氮气浓度
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杂交优势往往在第几代杂交种子中表现最明显。___
A. 1
B. 2
C. 3
D. 4
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以下不属于人体增强技术类型的是___
A. 短暂性增强
B. 持续性增强
C. 结构性增强
D. 内在增强
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大陆漂移学说是由谁提出的___
A. 勒比雄
B. 魏格纳
C. 赫斯
D. 李四光
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(1)Whieh of the following descriptions about the characteristics of physiology is wrong?___
A. It is the study of how living organisms work.
B. It illustrates the discipline of the development and the evolution of disease and the essence of disease.
C. It is to study the living phenomena and the function activities of living organs.
D. It is to explain how they are regulated and integrated.
【单选题】
(2) Which of the following are specialized in producing force and movement?___
A. muscle cells
B. connective tissues
C. nerve cells
D. epithelial cells
【单选题】
(3)The fluid environment surrounding each cell is called the___
A. intracellular fluid
B. intracellular fluid
C. internal environment
D. external environment
【单选题】
(4) Which of the following is not the fundamental characteristic of living organisms?___
A. metabolism
B. adaption
C. reproduction
D. passive diffusion
【单选题】
(5)Whicl of the following is a physiological process with negative feedback?___
A. blood coagulation
B. process of passing urine
C. sino-aortic baroreceptor reflex
D. process of parturition
【单选题】
(6)Which of the following is not the characteristic of regulation by hormone?___
A. diffusenin nature
B. longer in duration
C. accurate in action
D. action in overcorrection
【单选题】
7)Which of the following is not the characteristic of cells?___
A. They are bound by the plasma membrane
B. They have the ability to break down large molecules to smaller ones to Liberate energy for their activities
C. They possess a nucleus which contains genetic information in the form of deoxyribonucleicacid(DNA).
D. Living cells can not transform materials.
【单选题】
8)The breakdown of large molecules to smaller ones is called___
A. respiration
B. anabolism
C. catabolism
D. absorption
【单选题】
9) Which of the following descriptions about the characteristics of nervous regulation is wrong?___
A. It responds fast
B. It acts exactly
C. It responds slowly.D.
D. uration is short
【单选题】
10)Which of the following descriptions about the control of body function is wrong?___
A. Homeostasis is kept by feedback control.
B. Negative feedback minimizes the changes, leading to stability.
C. Positive feedback is not useful.
D. Feed-forward makes human body foresee and adapt itself to the environment promptly.
【单选题】
(1)Which of the following parts of knowledge of drugs should be included in pharmacology?___
A. The effects of drugs on man
B. The correlation of biological activity with chemical structure
C. The history, source, physical and chemical properties, compounding, biochemical and physiologicaleffects, mechanisms of action, absorption, distrilbution, biotransformation and excretion.
D. The prevention, recognition, and treatment of drug poisonings
【单选题】
(2)Which of the following is what a clinician is primarily interested in according to the text?___
A. Drugs which can be reasonably limited to those aspects that provide the basis for their rational clinical use
B. Chemical agents that are not used in therapy but are commonly responsible for household and industrial poisoning as well as environmental pollution
C. Drugs which are useful in the prevention,diagnosis and treatment of human disease,or in the prevention of pregnancy.
D. rugs which are useful in the prevention, diagnosis and treatment of human disease, or in the prevention of pregnancy.
【单选题】
(3)Why was the physician not interested in pharmacognosy?___
A. He didn't have to select the proper plants for his prescription
B. He had a broad botanical knowledge
C. Fewer drugs were obtained from natural sources
D. Natural drugs had little difference with synthetic ones
【单选题】
(4)Which of the following is the best way of studying pharmacology for medical students and practitioners?___
A. to have a broad botanical knowledge
B. to select a plant and its preparation
C. to have the ability to purify natural plants
D. to have curiosity that stimulates them to learn about sources of drugs
【单选题】
(5)What are the tasks related to medicines almost complete!y delegated to the pharmacists now?___
A. the physical and chemical properties of medicines
B. the preparing, compounding, and dispensing of medicines
C. dosage forms of medicines available
D. the therapeutic and other uses of medicines
【单选题】
(6) What is a main unique aspect of pharmacodynamics?___
A. Pharmacodynamics is an experimental medical science
B. Pharmacodynamics is focused on the characteristics of drugs
C. Pharmacodynamics borrows freely from both the subject matter and the experimenta techniques of physiology, biochemistry, microbiology, genetics and pathology
D. Pharmacodynamics correlates the entire field of preclinical medicine
【单选题】
7) What time of history does pharmacodynamics date back to?___
A. the second half of the seventeenth century
B. the second half of the eighteenth century
C. the second half of the nineteenth century
D. the second half of the twentieth century
【单选题】
8)What does the research on pharmacodynamics focus on?___
A. study of clinical effect of drugs
B. study of the process of drugs in the body
C. study of the effect and the mechanism of drugs on the body
D. study of the correlation of the actions and effects of drugs with their chemical structure
【单选题】
(9)Which of the following is true when drugs are selected?___
A. It has to be based in part on legal reasons.
B. It has to be based in part on ethical reasons.
C. It has to be based in part on the pharmacological evaluation in man
D. It has to be based in part on the pharmacological evaluation in animals
【单选题】
(10)Why are chemotherapeutic agents useful in therapy?___
A. They stimulate or depress biochemical or physiological function in man in a sufficiently reproducible manner to provide relief of symptoms or, ideally, to alter favorably the course of disease
B. They can produce desired effects with only tolerable undesired effects
C. They have only minimal effects on man but can destroy or eliminate parasites
D. The selectivity of their effects is one of their most important characteristics
【单选题】
1)H. Mario Geysen initially used parallel synthesis as a quick way to identify which small_____ of any given large protein bound to an antibody.___
A. division
B. pieces
C. part
D. fragment
【单选题】
2)Chemists often start a combinatorial synthesis by attaching the first set of building blocks_____ to microscopic beads made of polystyrene.___
A. solid
B. inert
C. soft
D. active
【单选题】
3)The chemical reactions required to link compounds to the beads and later to detach them____ to the synthesis proces.___
A. induce complications
B. make easy
C. introduce complications
D. introduce easy
【单选题】
4)In a parallel synthesis, all the products are_____ separately in their own reaction vessels.___
A. combined
B. assembled
C. joined
D. assorted
【单选题】
(5)In many laboratories today, robots assist with the routine work of parallel synthesis, such as small___ amounts of reactive molecules into the appropriate wells.___
A. sending
B. transporting
C. delivering
D. giving
【单选题】
(6)Scientists can pull out from the mixture the beads that bear biologically active molecules and then,using sensitive detection techniques,___ the molecular makeup of the compound attached.___
A. determine
B. make sure
C. find
D. search