相关试题
【单选题】
给婴儿滥用耳毒性抗生素，会引起___。
A. 药物中毒性耳聋
B. 中耳炎
C. 耳出血
D. 耳鸣
【单选题】
婴儿缺乏___，主要表现为指甲发白，没精神，眼结膜发白等。
A. 叶酸
B. 维生素K
C. 维生素B2
D. 维生素C
【单选题】
婴儿缺乏___，主要表现为口角炎，口唇干裂，舌色红紫，眼疼等。
A. 维生素B2
B. 维生素K
C. 维生素C
D. 叶酸
【单选题】
2周岁以内最好不看电视，用___给婴儿洗脸，以防眼病。
A. 流动水
B. 盆接水
C. 脏水
D. 药水
【单选题】
婴儿缺乏维生素B2主要表现为___，口唇干裂，舌色红紫，眼疼等。
A. 口角炎
B. 全身骨头疼
C. 血色素低
D. 吸收力差
【单选题】
___包括食物、药物两大类。
A. 营养物
B. 生活用品
C. 学习用品
D. 水
【单选题】
婴儿生长监测___主要包括，身长测量，头围与胸围的测量。
A. 体重测量
B. 智力测评
C. 情绪测评
D. 环境测评
【单选题】
婴儿___主要包括，体重测量，身长测量，头围与胸围的测量。
A. 生长监测
B. 心理监测
C. 发育监测
D. 日常生活
【单选题】
学习___知识能够早期发现婴儿异常并对常见疾病进行及时处理。
A. 生长监测
B. 意外伤害护理
C. 心理
D. 教育
【单选题】
每次测量体重要连续测三次，用两个相近的数字的平均数作为记录数字，体重数字记录到小数点后___。
【单选题】
婴儿生长监测包括生长发育的知识，人体测量学常用参数，___。
A. 生长发育监测方法
B. 营养曲线
C. 学习习惯
【单选题】
用一个有代表性的跨距来说明整个锚段的（ ），即当量跨距。___
A. 长度
B. 张力
C. 长度变化规律
D. 张力变化规律
【单选题】
在接触网计算中，只有先计算确定了锚段的（ ）后，才能进行安装曲线的计算绘制。___
A. 当量跨距
B. 额定张力
C. 实际长度
D. 计算负载
【单选题】
当气象条件发生变化时，当量跨距下导线（）与锚段内各跨距线索张力变化规律相同。___
A. 长度变化规律
B. 张力变化规律
C. 长度
D. 张力
【单选题】
简单悬挂要求接触线应有（），并有较好的稳定性。___
A. 较小的张力和较小的弛度
B. 较小的张力和较大的弛度
C. 较大的张力和较小的弛度
D. 较大的张力和较大的弛度
【单选题】
吊弦有因（）的痕迹，说明该吊弦已不正常应及时更换或主导电回路也有问题，必须及时检查。___
A. 闪络
B. 接触不良
C. 击穿
D. 导流发热
【单选题】
所谓“非正常的电流转换”没有保证牵引电流通过的必要的（），所以就发生了设备零部件的烧损。___
A. 电气连接
B. 电连接
C. 线索连接
D. 机械连接
【单选题】
受电弓对硬点碰撞和产生电弧造成接触网和受电弓的（），影响取流，对电动列车和电器产生不良影响，严重时会造成弓网事故。___
A. 机械损伤
B. 电弧烧伤
C. 机械损伤和电弧烧伤
D. 电压不稳定
【单选题】
剐网是由（）的原因引起弓网故障现象。___
A. 电动列车受电弓
B. 接触网
C. 定位点位移
D. 风偏
【单选题】
离线时产生拉弧，烧损接触线，严重时可使接触线（）急剧下降，造成接触线被拉断的事故。___
A. 电气强度
B. 载流量
C. 机械强度
D. 抗拉强度
【单选题】
接触悬挂传给支柱的风负载是指（）。___
A. 接触线风负载
B. 承力索风负载
C. 支柱承担的附加导线
D. 以上均是
【单选题】
当线索下锚时，下锚支线索由于改变方向对转换柱产生的水平分力，称为线索的（）。___
A. “之”字力
B. 曲线力
C. 下锚分力
D. 转换分力
【单选题】
（）是软横跨的主要构件，承力索受各股道纵向接触悬挂的全部垂直负载。___
A. 支柱
B. 上下部定位绳
C. 横向承力索
D. 直吊弦
【单选题】
多股道接触悬挂通过横向线索悬挂在线路两侧的支柱上的装配方式称为（）___
A. 简单悬挂
B. 链型悬挂
C. 硬横跨
D. 软横跨
【单选题】
非绝缘软横跨的（）对地绝缘。___
A. 上、下部定位绳
B. 横向承力索
C. 支柱
D. 直吊弦
【单选题】
在软横跨结构中，没有以下哪个部分。（）___
A. 横向承力索
B. 腕臂
C. 上、下部定位绳
D. 承力索
【单选题】
横向承力索是软横跨的主要构件，承力索受各股道纵向接触悬挂的全部（）。___
A. 垂直拉力
B. 水平拉力
C. 垂直负载
D. 水平负载
【单选题】
上部固定绳的作用是固定各股道的（），并将它的水平负载传递给支柱。___
A. 纵向承力索
B. 横向承力索
C. 接触线
D. 架空地线
【单选题】
（）的作用是固定各股道的纵向承力索，并将它的水平负载传递给支柱。___
A. 下部固定绳
B. 上部固定绳
C. 横向承力索
D. 直吊弦
【单选题】
在软横跨中，（）承力索通过直吊弦承受全部悬挂的重量。___
【单选题】
在一定的负荷情况下，如果横向承力索弛度增大，横向承力索悬挂点处水平张力减小了，但要求支柱要（）。___
A. 增加刚度
B. 增加容量
C. 增加强度
D. 增加高度
【单选题】
横向承力索和上、下部定位索均不得有接头、断股和补强，其机械强度（）应符合有关规定。___
A. 安全系数
B. 刚度
C. 数值
D. 拉力
【单选题】
上、下部定位应水平，允许有平缓的（），5股道及以下者不超过100mm，5股道以上者不超过200mm。下部定位索距接触线的垂直距离不得小于250mm。___
A. 正弛度
B. 负弛度
C. 拉出值
D. 之字值
【单选题】
软横跨结点3、4表示软横跨在（）上的装配形式。___
A. 钢支柱
B. 混凝土支柱
C. 非工作支定位
D. 工作支定位
【单选题】
软横跨结点5在（）时，悬挂承力索的鞍子改为滑轮。___
A. 简单悬挂
B. 链形悬挂
C. 半补偿链形悬挂
D. 全补偿链形悬挂
【单选题】
硬横跨刚度好，稳定性高能改善弓网受流，降低（）。___
A. 接触线高度
B. 离线率
C. 实际负载
D. 受力状态
【单选题】
硬横跨跨越能力强，能有效（），做到既满足刚度又满足稳定性。___
A. 提高支柱高度
B. 降低支柱高度
C. 增加支柱强度
D. 增加机械强度
【单选题】
硬横跨上、下固定绳的安装高度应符合设计要求，允许误差为（）。___
A. ±10mm
B. ±20mm
C. ±30mm
D. ±50mm
【单选题】
横跨定位绳应水平，下固定绳允许有（）。___
A. 0.3%的正弛度
B. 0.3%的负弛度
C. 0.1%的正弛度
D. 0.1%的负弛度
【单选题】
以下哪项是接触网电气分段的作用（）。___
A. 保证供电可靠性
B. 保证供电灵活性
C. 缩小事故范围
D. 以上均是
推荐试题
【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
【单选题】
10)In many laboratories today, robots___ the routine work of parallel synthesis.___
A. help
B. assist with
C. assist in
D. assist to
【单选题】
(1)Pharmaceutics is an interdisciplinary subject involving___
A. formulation, manufacturing, physical pharmacy, and biopharmaceutics
B. manufacturing
C. physical pharmacy
D. biopharmaceutics
【单选题】
（2）Formulation is about the design, development and evaluation of dosage forms,___
A. discovery of novel drugs
B. analytical methods
C. drug delivery systems and manufacturing process
D. dosing regimen
【单选题】
(3)Biopharmaceutics mainly studies the in vivo process of drugs and metabolites in humans, animals and tissue culture, which specifically involves___
A. absorption and distribution
B. absorption, distribution, metabolism, and excretion
C. metabolism and excretion
D. absorption and excretion
【单选题】
(4)Regarding the definition of bioavailability(BA), BA is related to___
A. total plasma drug concentration only
B. unbound drug concentration in the plasma
C. unbound drug concentration at the target site
D. total plasma drug concentration, and the administered drug dose
【单选题】
(5)Plasma drug concentration is affected by following factors such as___
A. rate of absorption
B. rate and extent of distribution
C. rate ofeli Imination
D. all ofabove
【单选题】
6)Which of the following routes of administration will involve the absorption of drugs?___
A. i.v.injection
B. i.v.infusion
C. Subcutaneous injection, transdermal and oral
D. None of above
【单选题】
（7）Which of the following factors may influence the time course of a drug in the plasma and hence at its site of action?___
A. Food
B. Disease state
C. Route of administration
D. All of above
【单选题】
(8)Please identify the potential biological barriers for an orally administered tablet to be absorbed into the systemic circulation___
A. Sk d dermis
B. Gastrointestinal epithelium
C. Oral mucosal membrane
D. All of above
【单选题】
(9) Given the same administration dose, which of the following will likely result in varying bioavailabilities for the same drug administered to the same person? ___
A. tablets (p.o. )vs. solutions(p0.)
B. solutions for injection(i v )vs oral solutions(p0.)
C. coated tablets (p.0. )vs hard gelatin capsules(p0.)
D. All ofabove
【单选题】
(10)Which of the following statements is true?___
A. Bioavailability is only related to the administered dose and the total drug concentration in the blood circulation.
B. Plasma protein binding does not affect the bioavailability of a specific drug.
C. A given drug in different dosage forms may show differences in bioavailability if given by the same route.
D. Biopharmaceutical studies do not involve animal experiment.
