相关试题
【多选题】
ping命令常用的参数有哪些（）。___
【多选题】
PON是以点到多点为特征的单纤双向无源光网络，它包括三个组成部分：（）。___
A. OLT
B. ONU
C. BAM
D. ODN
【多选题】
PON系统主要的组网方式有（）。___
【多选题】
安装光衰减器的目的是（）___
A. 防止光功率过载
B. 保护接收光模块
C. 提高信噪比?
D. 降低了接光板收灵敏度
【多选题】
按照覆盖范围的不同，网络可分为（）。___
A. 广域网
B. 城域网
C. 局域网
D. 本地网
【多选题】
拆除跨越电力线的通信线缆时，可做的准备工作有（）。___
A. 与供电部门联系停电
B. 拉下电闸并有人值守
C. 作业前测电
D. 剪断电线
【多选题】
常见的网络测速方法有（）。___
A. PING
B. 下载测速
C. 专业网站测速
D. 专用软件
【多选题】
常用的光分路器可以分出的光路有（）。___
A. 1:2
B. 1:3
C. 1:4
D. 1:8
【多选题】
常用的网络测试命令有（）。___
A. ping
B. tracert
C. netstat
D. ipconfig
【多选题】
常用基于PON的FTTH光功率测量仪器（）。___
A. 2M误码测试仪
B. 波长分离的PON功率计
C. 普通光功率计
D. 以太网测试仪
【多选题】
常用无源光分路器有（）。___
A. 1:8
B. 1:4
C. 1:16
D. 1:32
【多选题】
出现Ping丢包现象，就会发生（）___
A. 上网断线
B. 网页打开缓慢
C. 发送接收邮件速度慢
D. 视频收看正常
【多选题】
单模光纤的优点有哪些（）？___
A. 损耗低
B. 频带宽
C. 容量大
D. 成本低
【多选题】
当用户提出的问题装维人员不能解答时，严禁用下列语言回答___
A. 这是规定，就不行，没有为什么，这是规矩！
B. 快下班了，明天再说吧！
C. 我解决不了！
D. 这问题属于业务问题，我会向客户经理反馈。
【多选题】
电动车安全检查主要从（）方面进行___
【多选题】
根据ONU设备放置位置的不同，PON网络可以分为（）等多种接入方式。___
A. FTTH
B. FTTB
C. FTTC
D. FTTO
【多选题】
光分路器组件外型分为()几种类型。___
A. 托盘式
B. 机框式
C. 盒式
D. 微型
【多选题】
光缆的防水防潮性能主要靠()提供。___
A. 阻水油膏
B. 护层
C. 铝塑粘结护套
D. 钢塑粘结护套
【多选题】
光缆分类方法很多，按内部结构不同可分为（）。___
A. 层绞式光缆
B. 中心束管式光缆
C. 带状多芯单元光缆
D. 骨架式光缆
【多选题】
光缆交接箱是由哪几部分组成()。___
A. 箱体和配线单元
B. 熔接单元
C. 存储单元
D. 固缆及保护单元
【多选题】
光缆线路障碍形成的主要原因主要有()。___
A. 设备不良
B. 工程与维护不良
C. 外力影响
D. 天气原因
【多选题】
光网络单元(ONU)应根据建筑物提供的安装条件和用户要求，选择合适的安装位置。但应避免安装在什么地方。（）___
A. 潮湿
B. 高温
C. 强磁场干扰源
D. 信息盒
【多选题】
光纤产生损耗的原因是什么（）？___
A. 瑞利散射
B. 在红外、紫外区玻璃的固有吸收
C. 杂质吸收
D. 光纤结构不完善所产生的辐射和散射
【多选题】
光纤端面的处理包括哪些过程?()___
A. 去除套塑层
B. 去除一次涂层
C. 清洗光纤
D. 切割、制备端面
【多选题】
光纤端面制备的准备工作包括（）。___
A. 光纤制作的工具准备
B. 熔接平台布置
C. 光纤制作材料准备
D. 熔纤机校正、放电试验
【多选题】
光纤接入的应用模式有（）。___
A. FTTH
B. FTTO
C. FTTB
D. FTTC
【多选题】
光纤连接器常采用接口类型有()。___
A. 螺丝卡口
B. 卡销固定
C. 推拉式
D. 捆扎式
【多选题】
光纤连接器端面类型，分为如下几种?()___
A. PC
B. APC
C. UPC
D. FC
【多选题】
光纤熔接常用的仪表、工具有（）。___
A. OTDR
B. 光纤熔接机
C. 光纤切割刀
D. 光缆外护套开剥器
【多选题】
光信号在光纤中传输的距离受到什么的双重影响()___
A. 光功率
B. 信噪比
C. 色散
D. 损耗
【多选题】
机顶盒开机时有中国移动或者中国移动网络电视伴侣、微信新功能大屏生活，从今天开始的启动界面，但过一段时间后，无任何显示，以下处理方法正确的是：___
A. 重启终端
B. 把机顶盒硬复位出厂设置（硬件恢复出厂设置操作步骤是：终端断电状态下按住那个硬恢复的孔内按键，打开电源开关，按住孔内按键约5秒钟松开，终端的两个指示灯交替闪烁）
C. 参照机顶盒更换流程给以替换，并走返修流程
D. 在营业系统内更改牌照方
【多选题】
计算机的应用软件通常可分为哪几类？（）___
A. 聊天软件
B. 安全软件
C. 视频软件
D. 文职处理软件
【多选题】
计算机防范网络风险的方法有哪些？（）___
A. 不下载来路不明的软件及程序，不打开来历不明的邮件及附件
B. 分类设置密码并使密码设置尽可能复杂
C. 定期备份重要数据
D. 如果有条件，安装个人防火墙（FireWall）以抵御黑客的袭击
【多选题】
计算机硬件的主要有（）部分组成。___
【多选题】
接入网光缆称为用户光缆，主要包括()。___
A. 中继光缆
B. 配线光缆
C. 引入光缆
D. 主干光缆
【多选题】
进入哪些场所前，必须先通风，防止有害气体造成人身伤害（）___
A. 中心机房
B. 地下室
C. 弱电井
D. 人孔
【多选题】
客户端可以ping通127.0.0.1及本机的IP地址，但无法ping通同一网段内其他工作正常的计算机的IP地址，下列说法正确的是（）。___
A. TCP/IP协议能正常工作
B. 本机网卡能正常工作
C. 本机网络接口可能故障
D. 本机DNS服务器地址设置错误
【多选题】
宽带拨号提示错误代码691时，以下处理方法正确的是：___
A. 确认用户名或密码是否输入正确，注意区分大小写
B. 检查用户宽带上网帐号试用期是否到期
C. 通过后台认证系统检查是否端口限制
D. 检查电脑是否中毒
【多选题】
宽带业务的接入方式有两种类型，即（）。___
A. 有线接入
B. 无线接入
C. 交换接入
D. 网络接入
【多选题】
宽带用户通过家用无线路由器上网，笔记本电脑无线网卡获取到IP地址169.254.0.1，笔记本电脑无法正常上网，以下处理步骤正确的是：___
A. 笔记本电脑无线网卡获取的IP地址169.254.0.1为无效地址，原因为计算机没能和路由器的DHCP服务功能产生联系，一般为路由的DHCP功能没有正常打开
B. 登录路由器，通过路由器的DHCP服务器，启用DHCP功能
C. 查看笔记本电脑无线网卡能否正常获取到路由器私网IP地址，并测试上网
D. 检查入户线是否中断
推荐试题
【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.
【判断题】
Much of our present physiological knowledge has been found from the experiments and studies on human beings.
【判断题】
Living cells break down glucose and fats to provide energy for other activities, which is called.
【判断题】
The right atriapumps deoxygenated blood to the lungs where it absorbs oxygen from the air.
【判断题】
The nervous system uses electrical signals to transmit information very rapidly to specific cells.
【判断题】
With the level of sodium increasing extracelular fruid. the cardiac muscle cells become too excitable and may contract.
【判断题】
A negative feedback loop is a control system that acts to maintain the level of some variables within a given range following a disturbance
【判断题】
(1)Pharmacodynamics, which is concerned with the study of the biochemical and physiological effects of drugs and their mechanisms of action, Is an experimental medical science.
【判断题】
2)It's unreasonable for a physician to be interested mainly in the effects of drugs on human beings, for the pharmacological evaluation of drugs in them may be limited due to technical, legal, and ethical reasons.
【判断题】
（3） As the effects of drugs are often characterized by significant interspecies variation and may be further modified by disease, clinical pharmacology has never been efibrasized.
【判断题】
The physician is not interested in drugs that are useful in the prevention,diagnosis,and treatment of human disease, but in chemical agents that are commonly responsible for household and industrial poisoning as well as environmental pollution.
【判断题】
(5)A drug is said to be useful in therapy if it has the ability to produce its desired effects with only tolerable undesired effects.
