【单选题】
对细胞的概念，近年来比较普遍的提法是：有机体的___
A. 形态结构的基本单位
B. 形态与生理的基本单位
C. 结构与功能的基本单位
D. 生命活动的基本单位
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相关试题
【单选题】
自然界的生物可以分为三大类，这就是___
A. 动物、植物与微生物
B. 海洋生物、陆地生物与高山生物
C. 动物、植物与昆虫
D. 高等生物、低等生物与微生物
【单选题】
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
B. 落叶针叶树种
C. 常绿阔叶树种
D. 落叶阔叶树种
【单选题】
老虎与豹是属于同一科大动物。下列动物中也属该科的是___
【单选题】
生物是人类不可缺少的“朋友”，但目前正遇到___
A. 人工培育威胁
B. 种类减少威胁
C. 自相残杀威胁
D. 天外来客威胁
【单选题】
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___
A. 蕨类植物
B. 地衣
C. 蓝藻
D. 苔藓
【单选题】
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 ___
【单选题】
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
B. 二氧化碳
C. 氮气
D. 不知道
【单选题】
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___
A. 空气温度
B. 空气湿度
C. 氧气浓度
D. 氮气浓度
【单选题】
杂交优势往往在第几代杂交种子中表现最明显。___
【单选题】
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
【单选题】
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
【单选题】
(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
【单选题】
(7)Most pharmaceutical companies today continue to___ parallel synthesis. Which of the following is not appropriate to be filled in the blank?___
A. count in
B. count on
C. depend on
D. rely on
【单选题】
(8)Once they identify a promising substance, they___ make many one-at-a-time modifications to the structure.___
A. laboriously
B. hardly
C. easy
D. effectively
【单选题】
(9)Often these procedures yield a compound having acceptable___ and safety.___
A. strength
B. effect
C. potency
D. effort
推荐试题
【单选题】
801.(A320)APUSerialNumberEncoder能提供的信息有:___
A. A.APU序号
B. B.APU小时
C. C.APU循环
D. D.B和C
【单选题】
802.(A320)APU保护性停车的故障显示在什么地方？___
A. A.ECAM
B. B.CFDS
C. C.ECB
D. D.CDU
【单选题】
803.(A320)APU冷却风扇可对什么部件进行冷却？___
A. A.交流发电机
B. B.滑油冷却器
C. C.附件
D. D.以上都正确
【单选题】
804.(A320)APU停车时，什么时候指令进气门关闭？___
A. A.RPM7%
B. B.RPM50%
C. C.RPM95%
D. D.RPM100%
【单选题】
805.(A320)APU停车时，松开主电门“ON”，则：___
A. A.超温和超速电路检查
B. B.防喘valve关闭
C. C.燃油关断valve关闭
D. D.进气门关闭
【单选题】
806.(A320)Deoil电磁阀功能是:___
A. A.当APU启动时打开,减轻起动机负载
B. B.当APU关车时打开,加速关车
C. C.APU停车时，关断
D. D.A和B
【单选题】
807.(A320)关于APU主燃油总管和辅助燃油总管说法正确的是:___
A. A.起动时,仅辅助燃油总管供油
B. B.加速时,仅主燃油总管供油
C. C.APU引气供应空调时,主和辅助燃油总管供油
D. D.APU正常工作时由主燃油总管供油
【单选题】
808.(A320)哪一个是APU起动时的顺序?___
A. A.主电门接通、进气门打开，起动电门接通、起动马达接通，然后是点火和供油；
B. B.起动电门接通、起动马达接通，主电门接通、进气门打开，然后是点火和供油；
C. C.起动电门接通、起动马达接通，然后是点火和供油，主电门接通、进气门打开
D. D.起动电门接通，进气门打开，主电门接通、起动马达接通，然后是点火和供油；
【单选题】
809.(A320)哪一个是APU正常停车时部件作动的顺序?___
A. A.防喘valve打开、超温和超速电路检查、燃油电磁阀关闭、滑油稀释电磁阀打开、进出气门关闭、燃油valve关闭。
B. B.燃油电磁阀关闭、燃油valve关闭、防喘valve打开、超温和超速电路检查、滑油稀释电磁阀打开、进出气门关闭。
C. C.滑油稀释电磁阀打开、燃油电磁阀关闭、防喘valve打开、超温和超速电路检查进出气门关闭、燃油valve关闭。
D. D.防喘valve打开、超温和超速电路检查、燃油电磁阀关闭、燃油valve关闭、滑油稀释电磁阀打开、进出气门关闭。
【单选题】
810.(A320)如果APU的两个转速传感器都失效则：___
A. A.维护灯亮
B. B.不会停车
C. C.故障灯闪亮
D. D.以上都正确
【单选题】
928.(A320)下列哪一个部件故障不会导致APU保护性停车？___
A. A.EGT传感
B. B.转速传感器
C. C.滑油低压电门
D. D.P2传感器
【单选题】
929.(A320)?Deoil(滑油稀释)电磁阀失效在关闭时,会导致___
A. A.APU起动时低滑油压力而关车
B. B.APU慢起动而关车
C. C.APU正常工作
D. D.APU不能正常停车
【单选题】
930.(A320)APU的EGT热电偶探测的是哪里的温度?___
A. A.燃烧室出口
B. B.涡轮导向器
C. C.涡轮转子
D. D.消音器法兰处
【单选题】
931.(A320)APU进气门开始打开,下列说法不正确的是：___
A. A.起动机开始转动
B. B.燃油关断valve处于全开位
C. C.APU主电门在ON位
D. D.防喘valve不作动
【单选题】
932.(A320)Deoil电磁阀失效在打开时,会导致___
A. A.APU低滑油压力而关车
B. B.APU慢起动而关车
C. C.APU正常工作
D. D.APU不能正常停车
【单选题】
933.(A320)当Air/OilCooler堵塞时___
A. A.滑油泵将停止工作
B. B.APU滑油过热导致APU
C. C.压力释放valve将释放滑油回到滑油泵的吸油侧
D. D.滑油低压保护性停车
【单选题】
934.(A320)对EMU的描述错误的是:___
A. A.提供APU的使用计时
B. B.对T1和T2的数值进行叠加
C. C.提供APU舱环境温度
D. D.由FADEC直接控制
【单选题】
935.(A320)关于APU的速度传感器错误的是：___
A. A.是两个独立系统
B. B.感受磁性齿轮的运转
C. C.感受转子的组件的旋转环转速
D. D.更换时需要换胶圈
【单选题】
936.(A320)如果P2传感器和压差传感器故障，IGV如何作动？___
A. A.关闭
B. B.打开
C. C.调节状态
D. D.根据引气门位置确定
【单选题】
985.(A320)在孔探APU时发现DIFFUSER有严重调块和缺损，应该:___
A. A.立即换发
B. B.应根据涡轮压气机状况决定是否换发
C. C.不必采取措施
D. D.应根据EGT决定是否更换
【单选题】
986.(A320)FADEC显示SRVB,可能是:___
A. A.起动机反相电压不足
B. B.启动吹除valve故障
C. C.引气压力低
D. D.引气伺服valve发生短路
【单选题】
987.(A320)当APU在慢车状态工作正常，但加负荷时，转速下降，FCU是故障原因之一，还有的故障原因可能是下列哪一项？___
A. A.压差传感器
B. B.转速传感器故障
C. C.EGT热电偶故障
D. D.P2传感器故障
【单选题】
988.(A320)起动APU，看到在ECAMAPU页上有EGT和BLEEDPSI，证实发动机引气电门在OFF位，组件电门在OFF位，接通APU引气电门，如果EGT上升并且显示在ECAM上的BLEEDPSI没有增加，可能的原因是什么？___
A. A.LCV没有打开
B. B.LCV没有全开
C. C.IGV没有打开
D. D.飞机供气系统漏气
【单选题】
989.(A320)如果P2传感器和压差传感器故障，防喘valve如何作动？___
A. A.关闭
B. B.打开
C. C.调节状态
D. D.根据引气门位置确定
【单选题】
什么时候开始点火:___
A. A.7%RPM
B. B.75%RPM
C. C.95%RPM
D. 50％rpm
【单选题】
起动机马达什么时候关断:___
A. A.50%RPM
B. B.40%RPM
C. C.95%RPM
D. 0.6
【单选题】
从何处可以进行APU紧急关车___
A. A．APU控制面板,火警面板,外电源控制面板
B. B．加/抽油面板,外电源控制面板和驾驶舱
C. C．APU不能从飞机外部关车
D. D．火警面板或外电源控制面板
【单选题】
点火组件在什么阶段工作？___
A. A．0-50%
B. B．0-90%
C. C．75%-55%
D. D．7%-55%
【单选题】
下列关于APS3200APU说法正确的是：___
A. A．APU在任何工作状态下都可以提供引气或电源
B. B．若ECB故障，则APU无法正常工作
C. C．要关断APU，务必先关断APU的引气或电源负载
D. D．APU的正常工作转速是101％
【单选题】
当APU工作时，APU燃油泵是___
A. 一直在工作
B. 在燃油压力低的时候工作
C. 在空中工作
D. 在地面才工作
【单选题】
下列关于APU的起动说法正确的是：___
A. A．按压接通起动电门，则起动机和点火系统开始工作直到55％转速
B. B．起动过程中，由副油路供油到燃烧室
C. C．当冲压空气涡轮放出时，APU不能起动
D. D．起动过程中，防喘valve保持在关闭位
【单选题】
下列哪个部件由伺服燃油驱动___
A. A．IGV
B. B．BCV
C. C．APU进气门
D. D．A和B
【单选题】
APU的三个单元体是：___
A. 压气机，燃烧室，涡轮；
B. 动力部分，负载压气机，FCU；
C. 动力部分，负载压气机，附件驱动齿轮箱。
D.
【单选题】
APU的压气机设计成：___
A. 二级离心式；
B. 单级离心式；
C. 三级轴向式。
D.
【单选题】
APU的主要功能：___
A. 提供独立的气源和液压源；
B. 提供独立的气源和电源；
C. 提供电源和液压源。
D.
【单选题】
APU的主要功用是：___
A. 产生独立的气源和电源；
B. 产生独立的气源和液力源；
C. 产生独立的电源和液力源。
D.
【单选题】
APU发电机的主要参数：___
A. 45KVA，115V，50HZ；
B. 90KVA,50HZ；
C. 90KVA,115V，400HZ，3PHASES。
D.
【单选题】
APU滑油系统的正常供油压力是：___
A. 60-75PSI；
B. 85-95PSI；
C. 135-150PSI。
D.
【单选题】
APU滑油系统中的供油滤和回油滤都有一个压差电门，当压差达到多少时提供信号给CFDS：___
A. 35±5PSI；
B. 40±5PSI；
C. 55±5PSI。
D.
