相关试题
【单选题】
视频信号传输线选用冲击通流量1.5kA，限制电压不大于_______的防雷保安器。[331010101]___
A. 10V
B. 30V
C. 50V
D. 60V
【单选题】
交流轨道电路选用防雷保安器：工作电压小于36V时，限制电压应小于或等于_______。[331010101]___
A. 60V
B. 110V
C. 190V
D. 220V
【单选题】
交流轨道电路选用防雷保安器：工作电压36V～60V时，限制电压应小于或等于_______。[331010101]___
A. 220V
B. 330V
C. 350V
D. 380V
【单选题】
交流轨道电路选用防雷保安器：工作电压60V～110V时，限制电压应小于或等于_______。[331010101]___
A. 380V
B. 500V
C. 700V
D. 1000V
【单选题】
交流轨道电路选用防雷保安器：工作电压110V～220V时，限制电压应小于或等于_______。[331010101]___
A. 380V
B. 500V
C. 700V
D. 1000V
【单选题】
直流轨道电路选用防雷保安器：工作电压小于24V时，限制电压应小于或等于_______。[331010102]___
A. 60V
B. 75V
C. 110V
D. 220V
【单选题】
贯通地线在信号机房建筑物一侧每隔2m～3m用裸铜线与环形接地装置连接，两端各连接_______。[311030203]___
【单选题】
无线天线避雷针的接地装置应单独设置，并距环形接地装置_______以上。[311010103]___
A. 15m
B. 20m
C. 25m
D. 30m
【单选题】
无线天线避雷针的接地装置应单独设置，特殊情况下距环形接地装置不应小于_______。[311010103]___
A. 5m
B. 8m
C. 10m
D. 15m
【单选题】
ZPW-2000A无绝缘移频自动闭塞系统补偿电容采用_______进行现场设置。[312030201]___
A. △法
B. 每100m装一个
C. 等差法
D. 等间距法
【单选题】
ZC-8接地电阻测量仪在使用时，两接地棒即电位探针P＇和电流探针C＇沿直线相距_______。[322010103]___
A. 15m
B. 20m
C. 25m
D. 30m
【单选题】
S700K型电动转辙机因故不能转换到底时，电流一般不大于_______。[313010102]___
【单选题】
S700K电动转辙机的单线圈电阻不大于_______。[323010103]___
A. 50Ω
B. 54Ω
C. 58Ω
D. 64Ω
【单选题】
S700K电动转辙机代号A15/A16的输出额定转换力为_______。[311010103]___
A. 2500N
B. 3000N
C. 4500N
D. 6000N
【单选题】
S700K电动转辙机代号A17/A18的输出额定转换力为_______。[311010103]___
A. 2500N
B. 3000N
C. 4500N
D. 6000N
【单选题】
S700K电动转辙机代号A33/A34的输出额定转换力为_______。[311010103]___
A. 2500N
B. 3000N
C. 4500N
D. 6000N
【单选题】
JM-A型密贴检查器表示杆动程为_______。[311010103]___
A. 30mm～97mm
B. 65mm～120mm
C. 65mm～140mm
D. 90mm～150mm
【单选题】
JM-A型密贴检查器挤岔断表示的动程：从启动片的滚轮接触表示杆斜面开始为_______。[311010103]___
A. 10mm～13mm
B. 15mm～18mm
C. 15mm～20mm
D. 19mm～25mm
【单选题】
下列关于JM-A型密贴检查器说法正确的是：_______。[331010103]___
A. 每台密贴检查器应设有一组表示接点和一组斥离接点
B. 每台密贴检查器应设有一组表示接点和两组斥离接点
C. 每台密贴检查器应设有两组表示接点和一组斥离接点
D. 每台密贴检查器应设有两组表示接点和两组斥离接点
【单选题】
设在道岔两侧的JM-A型密贴检查器，一台密贴检查器的表示杆及其接点组检查尖轨的密贴位置，另一台密贴检查器的表示杆及其接点组检查尖轨的斥离_______以上位置。[331010204]___
A. 60mm
B. 65mm
C. 75mm
D. 78mm
【单选题】
JM-A型密贴检查器动接点环打入静接点片的深度应不小于_______。[332010204]___
A. 3mm
B. 4mm
C. 5mm
D. 6mm
【单选题】
JM-A型密贴检查器滚轮在表示杆缺口中平面或上平面滚动时，启动片离开表示杆的平面应为_______。[331010204]___
A. 0.3mm～0.8mm
B. 0.5mm～1.7mm
C. 0.3mm～2mm
D. 1mm～3mm
【单选题】
下列关于JM-B型密贴检查器说法正确的是：_______。[331010204]]___
A. 每台密贴检查器应设有一组表示接点和一组斥离接点
B. 每台密贴检查器应设有一组表示接点和两组斥离接点
C. 每台密贴检查器应设有两组表示接点和一组斥离接点
D. 每台密贴检查器应设有两组表示接点和两组斥离接点
【单选题】
JM-B型密贴检查器挤岔断表示的动程：从开关轴接触表示杆斜面开始小于或等于_______。[331010204]___
A. 3mm
B. 4mm
C. 5mm
D. 6mm
【单选题】
ELP-319型密贴检查器检测杆与接点座配合工作可检测_______尖轨动程。[331010204]___
A. 90mm～130mm
B. 170mm～190mm
C. 30mm～190mm
D. 50mm～100mm
【单选题】
S700K电动转辙机单芯电缆控制距离可达_______。[331010204]___
A. 1.5km
B. 2.0km
C. 2.5km
D. 3.0km
【单选题】
S700K型电动转辙机上下两检测杆无张嘴和左右偏移现象，检测杆头部的叉形连接头销孔的磨损旷量不大于_______。[312010204]___
A. 0.5mm
B. 1mm
C. 1.5mm
D. 2mm
【单选题】
三相电动机电源线中，任意两根线对调会使电动机_______。[32301024]___
A. 转速变慢
B. 转速变快
C. 不转
D. 反转
【单选题】
ZPW-2000A无绝缘移频自动闭塞系统_______用于实现主轨道电路、小轨道电路的调整。[311010103]___
A. 发送检测器
B. 侧线检测盘
C. 衰耗盘
D. 接收器
【单选题】
ZPW-2000R型无绝缘轨道电路在最不利条件下，用0.15Ω标准分路线分路，主轨道无分路死区段。调谐区分路死区段不大于_______。[331010103]___
【单选题】
ZP·WD型18信息移频轨道电路,在机车入口端轨面,用_______标准分路电阻线分路时,应满足动作机车信号的最小短路电流的要求。[311010103]___
A. 0.03Ω
B. 0.04Ω
C. 0.05Ω
D. 0.06Ω
【单选题】
ZP·WD型18信息移频轨道电路,在调整状态下,受电端接收盒限入电压应不小于_______,轨道电路应可靠工作。[322010101]___
A. 240mV
B. 250mV
C. 280mV
D. 290mV
【单选题】
连接两个节点的一段电路称为_______。[222000000]___
【单选题】
S700K型电动转辙机表示电路中电阻R1的阻值是_______。[312010103]___
A. 300Ω
B. 500Ω
C. 800Ω
D. 1000Ω
【单选题】
S700K型电动转辙机表示电路整流堆部分串入电阻R2的阻值是_______。[312010103]___
A. 300Ω
B. 500Ω
C. 800Ω
D. 1000Ω
【单选题】
信号微机监测系统不能监督与_______结合部有关状态。[311010105]___
【单选题】
在信号微机监测系统车站系统与人完成交互功能的是_______。[331010105]___
A. 上位机
B. 下位机
C. 采集机
D. CAN
【单选题】
在信号微机监测系统车站系统上位机通过_______与外界进行数据交换。[332010105]___
A. 下位机
B. CAN卡
C. 高速串口
D. 网卡
【单选题】
信号微机监测系统2DQJ光电探头黄灯亮绿灯灭表示道岔在_______。[331010105]___
A. 定位
B. 反位
C. 四开
D. 采集故障
【单选题】
信号微机监测系统车站系统上下位机之间采用_______通讯。[332010105]___
A. 网卡
B. 串口
C. CAN卡
D. 并口
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【判断题】
沃尔比重评分法是将选定的财务比率用线性关系联系起来，并分别给定各自的分数比重，然后通过与标准比重进行比较，确定各项指标的得分及总体指标的累积分数，从而对企业的信用水平做出评价的方法
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1 In our class,most discussions and activities take place in assigned small groups,These groups provide a supportive and safe environment that （） learning
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9 As the finance ministry rejected the defor its "lack of clarity",it[ ]complaint with the Europear Commission that this deal was against the law
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5 State governments and the colleges themselves have [ ] financial help to students with special abilities and those with financial needs
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10 Dogs cannot distinguish the color of trafficlights, so the master must make the decision of when it is safe to [ ] across the road
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6 The committee agreed that his papers
[ ] a wider circulation because of their essential and fundamental interest to a larger audience.
【填空题】
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1 Because women often restrict their diet
In an effort to control weight,they may
Not consume enough iron-rich food and
( ) experience an iron Deficiency.
【填空题】
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8 Americans defend the right to obtain a gun and they have[ ] been willing to turn a blind eye to the harm that people owning guns have caused
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7 The anger and frustration [ ] by the local people who do not understand what is happening to them will be a terrible and dangerous force
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2 Some reform advocates ignore the impact of
Class size on student achievement,and they
are ( ) what they call as a Priority:teacher effectiveness.
【填空题】
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3 Because of easy access to the Internet,the
New breakthrough tq create something
Truly creative ( ) happen anytime now.
【填空题】
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4 Indeed,if teachers want to( ) how far students might get in life, a better measurement than grades might be how hard the students try.
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5 Nature has( ) these animals ( ) a capacity for not showing Fear.
【填空题】
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6 During the weeks of discussion,delegations
from groups who are interested in the
Resolution may call on representatives to
( ) their point of view.
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7 Plato was a superb writer,and his works are
Part of the world’s great literature.Most of
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8 Young people should enter into a broad
Flexible training program,through which
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9 The young man is very happy and proud to
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【填空题】
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10 One day they passed more than 20 villages ( ),and some of these are Said to have stretched for six miles or more.
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7 Being asingle parent,there is no way for her
to ( ) the time and energy she has
devoted to her children for the past 10 years.
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8 It is essential that you start by listening because one of the main ( ) teenagers and their parents face in forming positive relationships is that neither listens to the other.
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9 We all know the dangers of an earthquake: the ( ) to buildings,the troubles can be caused by falling trees,and the terror occurs when the earth actually opens uip.
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10 Not until recently have we realized that the increasing world population may lead to a potential gloomy ( ) for humanity starvation.
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2 It is the development strategy/of the company to ( ) its overseas expansion in order to take a slice of the world market
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3 Nearly six million people go to see the Mona
Lisa every year,attracted by the ( )of her smile.When you're not lodking at her, she seems to be smiling;when you look at her,she stops.
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4 To live with a family whose native language is English is the ideal way to further improve one's English and to gain ( )into its culture.
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achievement in schools and help with the
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6 Einstein said his scientific discoveries grew
from his imagination rather than from( ),
reason and language.
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1 When the police caught up with him, Mr.Foster had to [ ] that he'd broken the speed limit.
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2 Whenever my boss makes a decision that I don't agree with, I tell him what I really think, though it's [ ] to make him happy by telling him his ideas are always right
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3 As can be probably perceived, a manned tip to Mars may soon[ ] since scientists have achieved the manned moon mlssion
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4 A number of countries are [ ]their efforts to send out food to the area worst affected by the flood.
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She authorizcd her partner to carry out daily responsibllitles [ ]when she was on her business trip
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On hering the latest news about your mother's ill health, I [ ]canceling your reservation at the Sheraton.
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There was an obvious indication that the police who have to enforce the new law were not[ ] the general discontent.
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When she heard of her failure in the experiment, her eyes[ ]tears; whether it was of shame, frustration, orgrief was difficult to tell.
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Rose knows that continuous letters fromJohn, together with countless roses are aimedat making her[ ]him.
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[ ]public school for drinking and smoking and then failing inshow business as a singer, she joined her father's business 10 years ago.
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Since the great scandals in banking,many people in the Country have[ ]the prospects of economic recovery within a few years.
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The parents were quite happy to[ ]our suggestion because had taked their most important concernsinto consideration.
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1When employees participated in the problem-solving process, they were muchvmore willing to [ ] solutions to the problems.___
