【单选题】
ZPW-2000A无绝缘轨道电路应能实现全程断轨检查，主轨道断轨时,“轨出1”电压不大于_______,轨道继电器可靠落下。[322010101]___
A. 110mV
B. 120mV
C. 130mV
D. 140mV
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答案
D
解析
暂无解析
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【单选题】
ZPW-2000A无绝缘轨道电路应能实现全程断轨检查，小轨道断轨时, “轨出2”电压不大于_______,轨道继电器可靠落下。[323010101]___
A. 43mV
B. 53mV
C. 63mV
D. 73mV
【单选题】
ZPW-2000A无绝缘轨道电路分路状态在最不利条件下,在1700Hz轨道电路区段任意一处用0.15Ω标准分路线分路,短路电流不小于_______。[322010101]___
A. 400mA
B. 500mA
C. 600mA
D. 700mA
【单选题】
ZPW-2000A无绝缘轨道电路分路状态在最不利条件下,在2000Hz轨道电路区段任意一处用0.15Ω标准分路线分路,短路电流不小于_______。[322010101]___
A. 400mA
B. 500mA
C. 600mA
D. 700mA
【单选题】
ZPW-2000A无绝缘轨道电路分路状态在最不利条件下,在2300Hz轨道电路区段任意一处用0.15Ω标准分路线分路,短路电流不小于_______。[322010101]___
A. 400mA
B. 500mA
C. 600mA
D. 700mA
【单选题】
ZPW-2000A无绝缘轨道电路分路状态在最不利条件下,在2600Hz轨道电路区段任意一处用0.15Ω标准分路线分路,短路电流不小于_______。[322010101]___
A. 450mA
B. 550mA
C. 650mA
D. 700mA
【单选题】
ZPW-2000A无绝缘轨道电路防护盒边缘距钢轨内侧不得小于_______。[312030205]___
A. 1300mm
B. 1400mm
C. 1500mm
D. 1600mm
【单选题】
ZPW-2000A无绝缘轨道电路补偿电容参数在1700Hz区段的指标及范围是_______。[322010103]___
A. 40uF±2.0uF
B. 46uF±2.3uF
C. 50uF±2.5uF
D. 55uF±2.75uF
【单选题】
ZPW-2000A无绝缘轨道电路补偿电容参数在2000Hz区段的指标及范围是_______。[322010103]___
A. 40uF±2.0uF
B. 46uF±2.3uF
C. 50uF±2.5uF
D. 55uF±2.75uF
【单选题】
ZPW-2000A无绝缘轨道电路补偿电容参数在2300Hz区段的指标及范围是_______。[322010103]___
A. 40uF±2.0uF
B. 46uF±2.3uF
C. 50uF±2.5uF
D. 55uF±2.75uF
【单选题】
ZPW-2000A无绝缘轨道电路补偿电容参数在2600Hz区段的指标及范围是_______。[322010103]___
A. 40uF±2.0uF
B. 46uF±2.3uF
C. 50uF±2.5uF
D. 55uF±2.75uF
【单选题】
ZPW-2000R型无绝缘轨道电路在调整状态最不利条件下，主接入电压不小于_______。[312010101]___
A. 230mV
B. 240mV
C. 250mV
D. 260mV
【单选题】
ZPW-2000R型无绝缘轨道电路在调整状态最不利条件下，调接入电压不小于_______。[312010101]___
A. 650mV
B. 700mV
C. 750mV
D. 800mV
【单选题】
ZPW-2000R型无绝缘轨道电路分路状态在最不利条件下，主轨道内用0.15Ω标准分路线分路时，主接入分路电压应不大于_______。[323010101]___
A. 140mV
B. 150mV
C. 250mV
D. 300mV
【单选题】
ZPW-2000R型无绝缘轨道电路调谐区内发送调谐单元处用0.15Ω标准分路线分路时，调接入分路电压应不大于_______。[323010101]___
A. 140mV
B. 150mV
C. 250mV
D. 300mV
【单选题】
ZPW-2000R型无绝缘轨道电路在电气化区段轨道回流不大于_______，不平电流不大于100A时应能可靠工作。[312010101]___
A. 1000A
B. 2000A
C. 3000A
D. 4000A
【单选题】
ZPW-2000R型无绝缘轨道电路防护罩边缘距轨内侧不小于_______。[311010103]___
A. 1000mm
B. 1500mm
C. 1550m
D. 1600mm
【单选题】
ZPW-2000R型无绝缘轨道电路电气节空芯线圈和调谐单元、匹配单元分别采用_______专用钢包铜双头引接线与轨道连接。[311010103]___
A. 2m、3.7m
B. 2m、3.8m
C. 3m、3.7m
D. 3m、3.8m
【单选题】
WG-21A型无绝缘轨道电路用0.15Ω边准分路线在轨道电路最不利处所分路时，接收器的限入残压不大于_______。[322010101]___
A. 110mV
B. 120mV
C. 130mV
D. 140mV
【单选题】
WG-21A型无绝缘轨道电路用0.15Ω准分路线在轨道电路最不利处所分路时,轨道继电器残压不大于_______,并可靠落下。[322010101]___
A. 3.1V
B. 3.2V
C. 3.3V
D. 3.4V
【单选题】
WG-21A型无绝缘轨道电路当电源电压最高,道床电阻最小,在最不利分路点断轨时,接收器的限入残压不大于_______。[321010101]___
A. 110mV
B. 120mV
C. 130mV
D. 140mV
【单选题】
WG-21A型无绝缘轨道电路当电源电压最高,道床电阻最小,在最不利分路点短轨时,轨道继电器残压不大于_______，并可靠落下。[322010101]___
A. 5V
B. 10V
C. 15V
D. 20V
【单选题】
WG-21A型无绝缘轨道电路在机车入口端轨面,用0.15Ω标准分路电阻线分路时,短路电流应符合在载频为1700Hz时,不小于_______。[322010101]___
A. 500mA
B. 505mA
C. 550mA
D. 600mA
【单选题】
WG-21A型无绝缘轨道电路在机车入口端轨面,用0.15Ω标准分路电阻线分路时,短路电流应符合在载频为2000Hz时,不小于_______。[322010101]___
A. 500mA
B. 505mA
C. 550mA
D. 600mA
【单选题】
WG-21A型无绝缘轨道电路在机车入口端轨面,用0.15Ω标准分路电阻线分路时,短路电流应符合在载频为2300Hz时,不小于_______。[322010101]___
A. 500mA
B. 505mA
C. 550mA
D. 600mA
【单选题】
WG-21A型无绝缘轨道电路在机车入口端轨面,用0.15Ω标准分路电阻线分路时,短路电流应符合在载频为2600Hz时,不小于_______。[322010101]___
A. 450mA
B. 550mA
C. 580mA
D. 600mA
【单选题】
微机、微电子交流计数电码轨道电路在调整状态下,向轨道发送稳定交流电源,接收变压器输入侧的交流电压或电气化区段滤波器输出电压,最大不超过_______。[313010101]___
A. 10V
B. 11V
C. 12V
D. 13V
【单选题】
微机、微电子交流计数电码轨道电路在送、受电端引接线电阻(包括电缆电阻)应不大于_______。[313010103]___
A. 0.2Ω
B. 0.3Ω
C. 0.4Ω
D. 0.5Ω
【单选题】
微机、微电子交流计数电码轨道电路用0.06Ω标准分路电阻线,在送、受电端轨面上分路时,接收变压器输入侧交流电压应不大于_______。[323010101]___
A. 2.1V
B. 2.2V
C. 2.3V
D. 2.4V
【单选题】
微机、微电子交流计数电码轨道电路(含站内电码化区段),在机车入口端轨面,用0.06Ω标准分路电阻线分路时的分路电流，电气化区段不小于_______。[321010101]___
A. 1.1A
B. 1.2A
C. 1.3A
D. 1.4A
【单选题】
微机、微电子交流计数电码轨道电路(含站内电码化区段),在机车入口端轨面,用0.06Ω标准分路电阻线分路时的分路电流，非电气化区段不小于_______。[321010101]___
A. 1.1A
B. 1.2A
C. 1.3A
D. 1.4A
【单选题】
ZPW-2000A型无绝缘移频自动闭塞系统,故障转换时间_______。[331010103]___
A. 小于等于1s
B. 大于等于1.6s
C. 小于等于1.6s
D. 大于等于1.4s
【单选题】
ZPW-2000A无绝缘移频自动闭塞系统,_______三种方式绝缘轨道电路具有相同传输长度。[321010103]___
A. 机械-机械、机械-电气、电气-电气
B. 机械、机械、电气
C. 电气、电气、机械
D. 电气、机械、电气
【单选题】
在双线双向自动闭塞区段，反方向运行时，通过改变运行方向，转换区间的发送和接收设备，并使规定方向的通过信号机_______。[333030204]___
A. 亮红灯
B. 亮绿灯
C. 亮黄灯
D. 灭灯
【单选题】
CTCS-2列控系统车载设备DMI显示屏中CSM区，列车未超速情况下，允许速度以_______显示。[322010201]___
A. 灰色
B. 深灰色
C. 橙色
D. 红色
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1___
A. She is going to have a lot of vanilla icecream.
B. She won the pelling competition at her school.
C. She is going to the state capital for a competition.
D. She spelled“exellence" correctly, but others didn't.
【单选题】
2___
A. His family moved to Sacramento to settle down.
B. His family bought him a new suit and a new tie.
C. He went to Sacramento for a spelling competition.
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3___
A. Tomake him feel better after he lost the first prize.
B. To apologize for not buying him some ice cream.
C. To wish him good luck in the next competition.
D. To congratulate him on winning the frst prize.
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1___
A. Superstitions and science.
B. Tips on how to have good luck.
C. Superstitions in the United States.
D. Rational and superstitious societies.
【单选题】
2___
A. Walking under a ladder.
B. Dreaming of a black cat.
C. Hanging a mirror in the house.
D. Stepping on one's own shadow.
【单选题】
3___
A. Because black cats look like witches.
B. Because black cats were thought to be witches.
C. Because black cats bring seven years of bad luck.
D. Because black cats are hard to notice in darkness.
【单选题】
4___
A. Breaking a mirror on purpose.
B. Catching a falling leaf on one's birthday.
C. Finding a penny on the ground and picking it up.
D. Dreaming of blowing out the candles in one blow.
【单选题】
1___
A. Read J. K. Rowling's first book.
B. Go to buy a new Harry Potter book.
C. Watch BBC news about J. K. Rowling.
D. Take her cousin to see a new Harry Potter movie.
【单选题】
3___
A. She won't write any more books.
B. She will write more magic stories.
C. She hasn't said anything about her future plans.
D. She said she would work on more serious subjects.
【单选题】
4___
A. J. K. Rowling's secret.
B. J. K. Rowling's writing plan.
C. A new book by J. K. Rowling.
D. An interview with J. K. Rowling.
【单选题】
1___
A. He broke the milk bottle.
B. He fell down on the floor.
C. He made a mess inside the refrigerator.
D. He spilled the milk over the kichcn floor.
【单选题】
2___
A. Ѕhе gаvе hіm а lоng leсture.
B. She shouted at him in anger.
C. She enjoyed the wonderful mess.
D. She cleaned up the mess with him.
【单选题】
3___
A. How to do an experiment.
B. How to carry amilk bottle.
C. How to clean up spilled milk.
D. How to avoid making mistakes.
【单选题】
4___
A. Mistakes can become learning opportunities.
B. Mistakes are just like scientific experiments.
C. One should sometimes make mistakes.
D. One should try to avoid making mistakes.
【单选题】
1___
A. Because he likes the sunny weather,
B. Because he wants to challenge himself.
C. Because it can help solve his sleeping problem.
D. Because it can help him forget all his troubles.
【单选题】
2___
A. To go sailing.
B. To go surfing.
C. To go to the beach.
D. To go to her nephew's.
【单选题】
3___
A. Going to visit relatives.
B. Enjoying the warm sun on the beach.
C. Building sand castles with her niece and nephew.
D. Playing in the sand and jumping in the waves.
【单选题】
4___
A. Surfing in the sea.
B. Collecting seashells.
C. Building sand castles.
D. Jumping in thewaves.
【单选题】
2___
A. People aged 16to 24.
B. People aged 25 to 34.
C. People aged 16 and over.
D. People aged 55 and over.
【单选题】
3___
A. People aged16 to 24 preferred listening to music most.
B. more popularB It was geting more andamong the Bish people.
C. Trwas the third most popular ativity among people aged 55 and over.
D. People aged 25 to 34 listened to musicmore often than those aged 16 to 24.
【单选题】
4___
A. Older people go out to pubs more often.
B. Younger people go to the cinema less frequently.
C. Older people spend more time reading and gardening.
D. Younger people spend less time visiting friends and family.
【单选题】
3___
A. She can either read or rest a little on the train.
B. She can read and respond to emails on the train.
C. She can travel to many different parts of the city.
D. She can go shopping on her way home from work.
【单选题】
4___
A. He can take the train to the old part of the city.
B. He can save a lot of money when he takes the train.
C. He can save 20 minutes to go to work with the train.
D. Hecan take the train to the airpor insted of driving.
【单选题】
1___
A. About an hour.
B. More than an hour.
C. About half an hour.
D. More than one and a half hours.
