【单选题】
The underlined word "they" in the last sentence refers to __________.___
A. the trainers             
B.  the systems
C. the researchers       
D. the dogs
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相关试题
【单选题】
 The new law passed in Rome will ________.___
A. help improve fishing environment
B. stop people from catching goldfish
C.  guarantee better conditions for goldfish
D.  discourage keeping goldfish at home
【单选题】
 People in Rome believe that the civilization of a city can be judged by _________.___
A. awareness of animal protection
B. exchanges with other cities
C. protection of ancient ruins
D. recognition of animal lovers
【单选题】
 The underlined word "compassion" in Para 2 is the closest in meaning to __________.___
A. support         
B. pity   
C. help               
D.  love
【单选题】
 People may break the law in Turin if they ________.___
A. keep their dogs or cats in cars
B. shut their dogs home all day long
C. raise their cats near ancient ruins
D. feed homeless animals in car parks
【单选题】
 We can infer from the passage that _________.___
A. the owners can leave their dogs in hot cars
B. the cat only lives in modern life
C. the new law can prevent cruelty to animals
D. the new law gives recognition to the  people who feed homeless cat
【单选题】
If a person finds getting up early a problem, most probably ________.___
A. he is a lazy person
B. he refuses to follow his own energy cycle
C. he is not sure when his energy is low
D. he is at his peak in the afternoon or evening
【单选题】
Which of the following may lead to family quarrels according to the passage?___
A. Unawareness of energy cycles.
B. Familiar monologues.
C. A change in a family member's energy cycle.
D. Attempts to control the energy cycle of other family members.
【单选题】
If one wants to work efficiently at his low point in the morning, he should __________.___
A. change his energy cycle
B. overcome his laziness
C. get up earlier than usual
D. go to bed earlier
【单选题】
You are advised to rise with a yawn and stretch because it will __________.___
A. help to keep your energy for the day's work
B. help you to control your temper early in the day
C. enable you to concentrate on your routine work
D. keep your energy cycle under control all day
【单选题】
Which of the following statements is NOT true?___
A. Getting off to work with a minimum effort helps save one's energy.
B. Dr. Kletman explains why people reach their peaks at different hours of day.
C. Habit helps a person adapt to his own energy cycle.
D. Children have energy cycles, too.
【单选题】
An effective way to prevent the burnout of young athletes is __________.___
A. to increase their sense of success
B. to make sports less competitive
C. to reduce their mental stress    
D. to make sports more challenging
【单选题】
According to the passage sport is positive for young people in that __________.___
A. it can help them learn more about society
B. it enables them to find flaws in themselves
C. it teaches them how to set realistic goals for themselves
D. it can provide them with valuable experiences
【单选题】
Many coaches and parents are in the habit of criticizing young athletes __________.___
A. without realizing criticism may destroy their self-confidence
B. in order to make them remember life's lessons
C. believing that criticism is beneficial for their early development
D. so as to put more pressure on them
【单选题】
According to the passage parents and coaches should __________.___
A. help children to win every game
B. pay more attention to letting children enjoy sports
C. train children to cope with stress
D. enable children to understand the positive aspect of sports
【单选题】
The author's purpose in writing the passage is _________.___
A. to persuade young children not to worry about criticism
B. to stress the importance of positive reinforcement to children
C. to discuss the skill of combining criticism with encouragement
D. to teach young athletes how to avoid burnout
【单选题】
As pointed out at the beginning of the passage, people used to think that air pollution _______.___
A. cause widespread damage in the countryside
B. affected the entire eastern half of the United States
C. had damaged effect on health
D. existed merely in urban and industries areas
【单选题】
As to the greenhouse effect, the author ________.___
A.  share the same view with the scientist
B. is uncertain of its occurrence
C. rejects it as being ungrounded
D. thinks that it will destroy the world soon
【单选题】
The underlined word "offset" in the second paragraph could be replaced by _________.___
A. slip into                 
B. make up for
C. set up                   
D. catch up with
【单选题】
It can be concluded that ____________.___
A. raising the world's temperature only a few degrees would not do much harm to life on earth
B. lowering the world's temperature merely a few degrees would lead major farming areas to disaster
C. almost no temperature variations have occurred over the past decade
D. the world's temperature will remain constant in the years to come
【单选题】
This passage is primarily about __________.___
A. the greenhouse effect
B. the burning of fossil fuels
C. the potential effect of air pollution
D. the likelihood of a new ice age
【单选题】
What is the major function of paragraph 1?___
A. To arouse the reader's concern.
B. To introduce the theme of the whole passage.
C. To summarize the whole passage.
D. To state the primary uses of TV.
【单选题】
Television, as a source of entertainment, is ________.___
A. not very convenient        
B. very expensive
C. quite dangerous            
D. relatively cheap
【单选题】
Why are some people against TV?___
A. Because TV programs are not interesting.
B. Because TV viewers are totally passive.
C. Because TV prices are very high.
D. Because TV has both advantages and disadvantages.
【单选题】
One of the most obvious advantages of TV is that _________.___
A. it keeps us informed
B. it is very cheap
C. it enables us to have a rest
D. it controls our lives
【单选题】
According to the passage, whether TV is good or not depends on ___________.___
A. its quality        
B. people's attitude towards it
C. how we use it      
D. when we use it
【单选题】
What regulation was issued by New York State concerning beverage containers?___
A. A fee should be charged on used containers for recycling.
B. Throwaways should be collected by the state for recycling.
C. Consumers had to pay for beverage containers and could get their money back on returning them.
D. Beverage companies should be responsible for collecting and reusing discarded plastic soda bottles.
【单选题】
The returned plastic bottles in New York used to _____________.___
A. be turned into raw materials
B. be separated from other rubbish
C. have a second-life value   
D. end up somewhere underground
【单选题】
The key problem in dealing with returned plastic beverage containers is ______________.___
A. how to reduce their recycling costs
B. to sell them at a profitable price
C. how to turn them into useful things
D. to lower the prices for used materials
【单选题】
Recycling has become the first choice for the disposal of rubbish because ______________.___
A. recycling causes little pollution
B. other methods are more expensive
C. recycling has great appeal for the jobless
D. local governments find it easy to manage
【单选题】
It can be concluded from the passage that ____________.___
A. recycling is to be recommended both economically and environmentally
B. local governments in the U.S. can expect big profits from recycling
C. rubbish is a potential remedy for the shortage of raw materials
D. landfills will still be widely used for waste disposal
【单选题】
The author chose to study engineering at a small liberal-arts university because he ________.___
A. intended to be a sensible student with noble ideals
B. wanted to be an example of practicality and rationality
C. intended to be a combination of engineer and humanist
D. wanted to coordinate engineering with liberal-arts courses in college
【单选题】
 According to the author, by interacting with people who study liberal arts, engineering students can __________.___
A. broaden their horizons
B. receive guidance in their careers
C. become noble idealists
D. balance engineering and the liberal arts
【单选题】
In the eyes of the author, a successful engineering student is expected ______________.___
A. to be imaginative with a value system to guide him
B. to be a technical genius with a wide vision
C. to have an excellent academic record
D. to be wise and mature
【单选题】
The author's experience shows that he was ________.___
A. creative        
B. ambitious  
C. irrational        
D. unrealistic
【单选题】
 The underlined word "they" in "... together they threaten to confuse." (Para.5) refers to ____________.___
A. practicality and rationality  
B. engineering and the liberal arts
C. reality and noble ideals  
D. flexibility and a value system
【单选题】
It can be learned from the passage that the Ouchidas' house __________.___
A. failed to meet energy conservation standards
B. was designed and constructed in a scientific way
C. is well worth the money spent on its construction
D. is almost faultless from the point of energy conservation
【单选题】
What made the Ouchidas' new house a horrible dream?___
A. Lack of fresh air.          
B. Gas leakage in the kitchen.
C. The newly painted walls.  
D. Poor quality of building materials.
【单选题】
The underlined word "accentuate" (Para. 3) most probably means "________".___
A. worsen        
B. accelerate  
C. relieve          
D. improve
【单选题】
Why were cracks in old houses not a big concern?___
A. Because environmental protection was given top priority.
B. Because indoor cleanness was not emphasized.
C. Because they were technically unavoidable.
D. Because energy used to be inexpensive.
【单选题】
This passage is most probably taken from an article entitled "_________".___
A. Energy Conservation
B. Air Pollution Indoors
C. House Building Crisis
D. Traps in Building Construction
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创建外网号时显示的First Internal Number与First External Number分别表示( )。
A. 外线号码与内线号码
B. 内线号码与外线号码
C. 内线号码与设置范围
D. 外线号码与设置范围
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公务电话查一个板子上各端口状态应使用命令( )。
A. bascul
B. listerm
C. swinst
D. mgr
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关于以太网防环机制描述正确的是( )。
A. 是三层网络的需要,没有防环机制则无法实现路由选择
B. 有效的提高网络可用性和带宽利用率
C. 集线器(HUB)也具有防环机制
D. 可以为用户提供透明的接入方式
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交换系统的服务质量指标可由下列那些指标来衡量( )。
A. 话务量,话音响度
B. 呼损指标,接续时延
C. 话音响度,通话时长
D. 话音清晰度,杂音
【单选题】
局间信令按技术或传送方式又可分为随路信令和( )两种方式。
A. 地址信令
B. 公共信道信令
C. 线路信令
D. 记发器信令
【单选题】
模拟话音信号数字化通过( )过程实现。
A. 量化 取样 编码
B. 编码 取样 量化
C. 取样 量化 编码
D. 取样 编码 量化
【单选题】
评价一台交换机性能如何,除了话务量这一质量指标以外,还有一个重要指标就是控制部件的( )。
A. 呼叫处理能力
B. 接续能力
C. 交换能力
D. 通信能力
【单选题】
全互连的组网方式带来的优势是( )。
A. 经济成本降低
B. 更多的路由选择,更强的物理线路容错性
C. 物路线路上相对均衡的衰减
D. 更为简单的组网
【单选题】
市话电缆的色谱为:大组:( )
A. 白、橙、黑、绿、灰
B. 蓝、橙、绿、综、灰
C. 白、红、黑、黄、紫
D. 白、绿、黑、黄、紫
【单选题】
信令是各交换局在完成( )的一种通信语言。
A. 呼叫接续中
B. 通话
C. 全过程
D. 呼叫结束时
【单选题】
以太网中的防环策略是( )。
A. STP生成树协议
B. 源删除、目的地删除和监控节点删除
C. 划分VLAN
D. 使用单播流量
【单选题】
在下列选项中,不属于用户数据的是( )。
A. 信令数据
B. 电话号码
C. 话机类别
D. 用户权限
【单选题】
重启一块电路板可以用rstcpl命令来执行,正确的命令行为:( )。
A. rstcpl
B. rstcpl cr_nbr
C. rstcpl cpl_nbr
D. rstcpl cr_nbr cpl_nbr
【单选题】
A4400交换机各ACT分架通过_________ 板与主ACT-CPU分架进行联接。
A. INTOF
B. CPU
C. NPRAE2
D. IO2N
【单选题】
48键调度台按键的顺序为( )连接的。
A. 自左至右,自下而上
B. 自左至右,自上而下
C. 自右至左,自下而上
D. 自右至左,自上而下
【单选题】
FH8161 数字录音仪的各个录音通道分别连至所要录音话机(或调度台)的音频接口,放音通道则接交换机的共电(或称用户)接口。可通过FH8161( ) 。
A. 只能本地放音
B. 既能本地放音,又能远程调听
C. 只能远程调听
D. 两者都不能
【单选题】
共电板提供6路共电接口,接( )。
A. 调度台
B. 值班台
C. 录音仪
D. 音频话机
【单选题】
共电板由( )等部分组成,分别完成与主控通讯,提供接口电路,和内部母线分配功能。
A. 通讯单元、共电接口单元、交换网
B. 通讯单元、共电接口单元、时钟单元
C. 切换逻辑单元、通讯单元、共电接口单元
D. 通讯单元、数模转换部分、共电接口单元
【单选题】
枢纽侧数据主要包括:( )、号码表、调度台按键表、调度侧组呼表、调度侧半固定接续表、中继表、号码转换表等。
A. 模块配置表、值班分机和值班台表、告警路由表
B. 模块配置表、模拟线路表、业务号码对照表
C. 模块配置表、模拟线路表、值班台按键表
D. 模块配置表、值班分机和值班台表、值班台按键表
【单选题】
一般情况下,通信使用下行E1通道,系统实时监测2M口的通信状态,当检测到“数字环”下行E1通道的某处断开时,立刻切换至上行E1通道方向进行通信,从而保证“数字环”的任何一处断开都不会影响系统的正常通信,切换时间为( )。
A. 微秒级
B. 毫秒级
C. 秒级
D. 分钟级
【单选题】
有铃流电源板除提供+5V、-5V直流电源输出,还提供两种( )的铃流源信号,分别向共电接口的用户话机和磁石接口的用户话机送振铃。
A. 25HZ、75V
B. 50HZ、75V
C. 25HZ、48V
D. 25HZ、110V
【单选题】
语音资料按分级目录的方式存储( ),以日期命名。
A. 每一小时的语音资料建立一个子目录
B. 每12小时的语音资料建立一个子目录
C. 每一星期的语音资料建立一个子目录
D. 每一天的语音资料建立一个子目录
【单选题】
在进行数据传送时,( )。
A. 只能将数据全部传送
B. 只能传送选定数据
C. 只能传送改动数据
D. 三种都可以
【单选题】
专用电话主系统数字层通过( )与主控层进行通信。
A. DB15接口
B. DB9串口
C. 40P总线
D. RS232串口
【单选题】
NC-16型噪声输入单元可外接( )个NH-D型噪声传感器。
A. 2
B. 4
C. 8
D. 16
【单选题】
一般总是要保证扬声器能得到( )标称功率值的音频功率。
A. 小于
B. 稍小于
C. 稍大
D. 等于
【单选题】
在开放式环境下,有线广播中的扬声器多数是采用( )扬声器。
A. 号筒式高音
B. 舌簧
C. 压电
D. 纸盆式
【单选题】
以下( )不是南延线车站广播控制单元的基本组成。
A. 数字汇接模块(SZ4-2)
B. 语音合成模块(YH-2)
C. 音频汇接模块(YP-5)
D. 功率放大器(TG200A)
【单选题】
以下对采样及监听模块描述不正确的是( )。
A. CY2-8采样及监听模块包含8路采样电路及8选1监听电路
B. 8路采样电路用于对功放的输出信号进行采样,并将采样结果输出至功放检测模块(GJ6-5)
C. 8选1监听电路可对8路广播区任意选择监听,并送往车站广播控制盒,供其选择监听。
D. 对功放进行检测
【单选题】
自动广播计算机远程其他计算机的CMD命令是( )
A. msconfig
B. ping
C. mstsc
D. regedit
【单选题】
自动广播计算机登录名和密码是( )
A. administration和1
B. administration和123
C. administrator和1
D. administrator和123
【单选题】
自动广播软件默认与设备采集箱通讯串口为( )
A. COM1
B. COM2
C. COM3
D. COM4
【单选题】
自动广播系统的列车位置检测器三芯线棕、蓝、黑的连接方法( )
A. 棕色电源正、蓝色电源负、黑色信号
B. 棕色电源正、蓝色信号、黑色电源负
C. 棕色电源负、蓝色电源正、黑色信号
D. 棕色电源负、蓝色信号、黑色电源负
【单选题】
A4400交换机退出系统命令为( )。
A. exit
B. quit
C. mtcl
D. swinst
【单选题】
PCM32系统中,每帧时长为( )μs。
A. 32us
B. 64us
C. 125us
D. 258us
【单选题】
公务电话OPS文件保存在( )板的硬盘中
A. INTOF
B. CPU
C. IO2N
D. NPRAE2
【单选题】
下列( )方式不是公务电话系统创建连选组时可设置的振铃方式
A. 循环振铃
B. 依次振铃
C. 同时振铃
D. 随机振铃
【单选题】
A4400交换机登录系统命令和密码为( )。
A. mtcl
B. SoftInst
C. mgr
D. config
【单选题】
按照信令的作用区域可以把信令划分为用户线信令和( )两种。
A. 地址信令
B. 公共信道信令
C. 局间信令
D. 记发器信令
【单选题】
查看公务交换机系统中继线状态命令( )。
A. config all
B. trkstat –r 中继组号
C. exit
D. get mao-acc