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【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
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答案
B
解析
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相关试题
【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
【单选题】
We need to plan ahead in order to ___________.___
A. keep a record of all the events    
B. better organize our activities
C. store everything in our head      
D. pile up little tasks neatly
【单选题】
Strategic times are best for us to ___________.___
A. save energy      
B. check e-mails            
C. study efficiently            
D. organize activities
【单选题】
Which of the following could be used as a motivation to do our assignments?___
A. Remembering our urgent tasks.      
B. Any activities we're eager to do.
C. Taking a break in the afternoon.  
D. The promise to study efficiently.
【单选题】
What can help us to keep refreshed throughout the day?___
A. Doing some physical exercise.        
B. Taking a short nap in the afternoon.
C. Rushing through some assignments.  
D. Playing a game of chess with a friend.
【单选题】
Which of the following could be the best title for this article?___
A. Study Habits and Time Management  
B. Business Management and Leadership
C. University Education and Campus Life      
D. Life Goals and Academic Development
【单选题】
It is implied in the text that it is hard to ________.___
A. carry life learning though  
B. tell the nature of life learning
C. learn without going to school
D. find a specially trained teacher
【单选题】
According to the author, the schooling framework often ________.___
A. produces slow students with poor memories
B. ignores some parts of the official curriculum
C. fails to provide enough knowledge about life
D. gives little care to the quality of teaching materials
【单选题】
Life learners recognize that learning will not be difficult if they are _________.___
A. clear about why to learn
B. careful to make a time table  
C. able to respect other people
D. cautious about any mistakes
【单选题】
According to the author, life learning ________.___
A. could prevent one from running risks
B. could be a road full of trials and errors
C. makes a kid independent of his parents
D. teaches a kid how to avoid being scorned
【单选题】
Through life learning, children ________.___
A. will grow without the assistance from parents
B. will learn to communicate with the real world
C. will be driven to learn necessary life knowledge
D. will be isolated from the negative side of society
【单选题】
A good title for this passage is __________.___
A. Sleep                 
B. Good Health    
C. Dreams             
D. Work and Rest
【单选题】
The word drowsy in the last paragraph means __________.___
A. sick                   
B. stand up       
C. asleep               
D. a little sleepy
【单选题】
This passage suggests that not getting enough sleep might make you ___________.___
A. dream more often     
B. have poor health   
C. nervous                 
D. breathe quickly
【单选题】
During REM,  ___________ .___
A. your eyes move quickly    
B. you dream  
C. you are restless   
D. both A and B
【单选题】
The average number of hours of sleep that an adult needs is __________.___
A. approximately six hours    
B. around ten hours    
C. about eight hours      
D. not stated here  
【填空题】
___
【填空题】
___
推荐试题
【单选题】
驾驶舱内分布有哪些重要的电路跳开关面板?___
A. 49VU;105VU
B. 120VU;106VU
C. 105VU;106VU;2000VU
D. 49VU;120VU
【单选题】
驾驶舱头顶板35VUELEC面板上的两个液晶式电压表用来指示:___
A. 两台主发电机输出电压
B. TR1及TR2的输出电压
C. APU发电机及CSM/G(应急马达发电机)输出电压
D. BAT1和BAT2的电压
【单选题】
控制操作地面勤务汇流条的“MAINTBUS”电门位于:___
A. 驾驶舱49VU面板(头顶跳开关面板)
B. 驾驶舱20VU面板(头顶控制面板)
C. 驾驶舱120VU面板(后跳开关面板)
D. 前登机过道顶部的2000VU面板
【单选题】
前登机过道顶部的2000VU面板上“MAINTBUS”电门被用于:___
A. 接通客舱灯光电源
B. 接通客舱电源插座电源
C. 接通勤务汇流条电源
D. 接通厨房电源
【单选题】
外部电源插座安装在:___
A. 前机身右外侧
B. 前机身左外侧
C. 前起落架舱内
D. 前机身,前起落架前部位置
【单选题】
外部电源通过飞机上的外电源插座,向飞机提供:___
A. 单相、400HZ、115/200V交流电源
B. 三相、400HZ、115/200V交流电源
C. 单相、400HZ、220/380V交流电源
D. 三相、400HZ、220/380V交流电源
【单选题】
下ECAM的“ELEC”页面上右发电机概况图下面显示的“IDG2110℃”字符表示:___
A. IDG滑油进口温度达到110℃
B. IDG滑油温升达到110℃
C. IDG滑油出口温度达到110℃
D. IDG滑油冷却器出口温度达到110℃
【单选题】
用红色护盖保护的应急马达发电机(CSM/G)电门,安装在:___
A. 前登机门过道头顶2000VU(跳开关面板)
B. 驾驶舱20VU(头顶控制面板)
C. 驾驶舱120VU(后跳开关面板)
D. 驾驶舱49VU(头顶跳开关面板)
【单选题】
在安装外电源电缆接头到外电源插座的时候,应当注意:1)连接前确认外电源电缆未有电源连接;2)外电源电缆接头和外电源插座状况良好;3)连接好后应当将电缆保持皮带挂好,防止电缆接头松脱___
A. 1和3
B. 1和2
C. 2和3
D. 1、2、3
【单选题】
在电源系统维护作业中,如果需要更换电路上的电路接触器或电路跳开关,正常的安全程序是:___
A. 无须切断飞机电源,但要拔掉电路跳开关并小心更换
B. 对于115V高电压电路,必须切断电源;对于28V电压电路,无须切断电源,小心更换即可
C. 切断飞机电源,小心更换
D. 必须切断飞机电源,对于热电瓶汇流条电路,还必须切断电瓶电源
【单选题】
在飞行中,APU驱动的发电机相对于另两台由发动机驱动的发电机而言,它是:___
A. 辅助性发电机,能替换其中任何一台发电机
B. 辅助性发电机,能完全替代另两台发电机
C. 辅助性发电机,只能在地面使用
D. 主要的供电电源
【单选题】
在紧急的情况下,应急马达发电机能向飞机提供(——)的电源。___
A. 5KVA,115/200V,三相,400HZ
B. 500KVA,115/200V,三相,400HZ
C. 55KVA,115/200V,单相,400HZ
D. 5KVA,220/380V,三相,400HZ
【单选题】
在脱开连接在飞机外电源插座上的地面电源电缆的时候,工作人员应当如何在地面确保飞机电网与地面电源的连接已经切断?___
A. 确认外电源插座托架上的琥珀色“EXTPWR/AVAIL”灯燃亮即可
B. 确认外电源插座托架上的白色“EXT/PWRNOTINUSE”灯燃亮即可
C. 确认外电源插座托架上的琥珀色“EXTPWR/AVAIL”灯及白色“EXT/PWRNOTINUSE”灯同时燃亮
D. 确认外电源插座托架上的琥珀色“EXTPWR/AVAIL”灯及白色“EXT/PWRNOTINUSE”灯同时熄灭
【单选题】
在正常的情况下ACESSBUS(交流基本汇流条+B28)由(——)提供电源。___
A. TR1(变压整流器1)
B. ACBUS1
C. ACBUS2
D. CSM/G(应急马达发电机)
【单选题】
怎样去确认发动机上的IDG(整体驱动发电机)滑油油量?___
A. 通过IDG上滑油量观察窗油面所在颜色area来确定滑油量
B. 在IDG滑油量窗上观察是否能看到油面
C. 在下ECAM的ELEC页面查看IDG滑油量
D. 在上ECAM查看相应的IDG滑油量
【单选题】
正常情况下,电源系统中的主要电气参数及状态监控被显示在:___
A. 上ECAM显示器上
B. 下ECAM显示器的“ELEC”页面
C. 上ECAM显示器和下ECAM显示器的“ELEC”页面
D. CDU上显示
【单选题】
主发电机电门位于(——),其作用是(——)。___
A. 驾驶舱头顶板上的35VU电源控制面板上;人工控制相应发电机的工作,向相应的电源网络提供或切断电能
B. 驾驶舱头顶板上的35VU电源控制面板上;仅仅用于相应发电机的应急切断
C. 驾驶舱头顶板上的35VU电源控制面板上;人工控制相应发电机的工作,向相应的电源网络提供或切断应急电源
D. 驾驶舱头顶板上的50VU维护面板上;仅仅用于相应发电机的应急切断
【单选题】
GPCU(地面电源控制器)的功能包括是:___
A. 地面电源的控制和保护
B. 地面电源供电系统的测试和监控
C. 向GCU提供并获得信息
D. A、B、C
【单选题】
IDG滑油冷却器是:___
A. 风冷却的冷却器
B. 滑油冷却的冷却器
C. 燃油冷却的冷却器
D. 专用冷却剂冷却的冷却器
【单选题】
IDG滑油冷却系统中,冷却器旁通valve在冷滑油运转的情况下将被打开,其作用是:___
A. 滑油温度低不需要进行冷却,将较少滑油损耗
B. 在起动过程中,防止冷却的滑油由于粘度较高,造成油滤的压差指示销误作动
C. 在起动过程中提高滑油泵的工作效率
D. 在滑油过热的情况下加强其冷却效率
【单选题】
IDG滑油冷系统中,冷却器旁通valve在什么情况下被打开?___
A. 当IDG冷却系统中的油滤被堵塞的情况下,冷却器旁通valve将被打开
B. 当IDG冷却系统中过热的情况被探测到,冷却器旁通valve将被打开
C. 在冷滑油运转的情况下,由于滑油的粘度较高,因此冷缺器旁同valve打开
D. 当IDG滑油系统压力过高的情况下,冷却器旁通valve将被打开
【单选题】
安装在驾驶舱头顶板应急电源面板上的应急马达发电机“MANON”电门,其作用是:___
A. 仅仅用于人工控制应急发电机(CSM/G)的工作
B. 用于在紧急情况下人工释放冲压涡轮(RAT)及应急马达发电机(CSM/G)的工作,是RAT放出的多余度控制电门
C. 是冲压涡轮(RAT)放出的多余度控制电门
D. 用于设置应急马达控制器处于人工或自动的控制方式
【单选题】
当飞机连接上可用的地面电源后,关于接通勤务汇流条的说法正确的是:___
A. 通过前登机过道顶部的2000VU面板上的“MAINTBUS”电门,直接接通勤务汇流条
B. 连接上可用的地面电源后,勤务汇流条直接获得电源
C. 将地面电源连接到飞机电网后,勤务汇流条才能获得电源
D. 将地面电源连接到飞机电网后,再作动前登机过道顶部的2000VU面板上的“MAINTBUS”电门,才能获得勤务汇流条
【单选题】
当工作人员将地面电源连接到飞机电网后,相应的外电源状态指示灯将:___
A. 驾驶舱头顶ELEC面板上的“EXTPWR”按钮电门上的“AVAIL”保持燃亮,同时蓝色的“ON”标示夜会燃亮;外电源插座托架上的“EXTPWR/AVAIL”标示保持燃亮,但“EXT/PWRNOTINUSE”灯熄灭
B. 驾驶舱头顶ELEC面板“EXTPWR”按钮电门上的“AVAIL”标识熄灭,同时蓝色的“ON”标示燃亮;外电源插座托架上的“EXTPWR/AVAIL”和“EXT/PWRNOTINUSE”灯熄灭
C. 驾驶舱头顶ELEC面板“EXTPWR”按钮电门上的“AVAIL”标识保持燃亮,同时蓝色的“ON”标示燃亮;外电源插座托架上的“EXTPWR/AVAIL”和“EXT/PWRNOTINUSE”灯熄灭
D. 驾驶舱头顶ELEC面板“EXTPWR”按钮电门上的标示及外电源插座托架上的“EXTPWR/AVAIL”和“EXT/PWRNOTINUSE”灯均会熄灭
【单选题】
当工作人员连接好地面电源电缆到飞机外电源插座并确认电缆电源开关接通的情况下,在驾驶舱观察到头顶板“EXTPWR”按钮电门上的“AVAIL”标示没有燃亮,这可能是:___
A. 外电源电缆接头与外电源插座未连接好
B. 外电源未连接到电源电缆上
C. GPCU检测外电源质量存在缺陷
D. A、B、C均有可能发生
【单选题】
当一台主发电机因为一个故障被终止激励而不能正常工作,正常情况下应当首先进行哪些维护工作?___
A. 更换相应的GEN(发电机)
B. 更换相应的GCU(发电机控制器)
C. 通过按压/松开相应发电机电门,尝试复位系统
D. 对主发电机系统进行线路测量
【单选题】
电源系统中,APU直接驱动APU发电机而无需要相关的恒速装置,这是因为:___
A. APU发电机附带有恒速装置
B. APU转速恒定,输出到发电机的速度也保持恒定
C. APU发电机产生的电源经过电源系统整流后转换成频率恒定的电源
D. 以上描述均不正确
【单选题】
电源系统中,BCL(电瓶充电限制器)的BITE测试及维护测试是通过(——)来实现的。___
A. 在控制器面板上的测试界面
B. CFDS(中央故障显示系统)
C. 在控制器面板上的测试界面,或者CFDS(中央故障显示系统)
D. 在下ECAM显示器的ELEC页面
【单选题】
电源系统中,对外电源接通控制描述正确的是:___
A. 受到驾驶舱头顶35VU电气面板上的外电源电门并通过地面电源控制器(GPCU)进行控制
B. 直接受驾驶舱头顶35VU电气面板上的外电源电门控制
C. 驾驶舱头顶35VU电气面板上的外电源电门和地面电源控制器(GPCU)均能单独控制地面电源的接通
D. 只有地面电源控制器才能控制地面电源的接通
【单选题】
电源系统中,发电机电压的建立是依靠励磁电压而产生的,这项功能包含在:___
A. 发电机控制器(GCU)
B. 电瓶充电机
C. GPCU(地面电源控制器)
D. EGIU(电源接口组件)
【单选题】
电源系统中,发电机向飞机提供(——),变压整流器TR向飞机提供(——)___
A. 交流电源;交流电源
B. 直流电源;直流电源
C. 交流电源;直流电源
D. 直流电源;交流电源
【单选题】
电源系统中,发动机通过(——)将变化的转速转换为恒定的速度,并驱动发电机工作___
A. 附件齿轮箱
B. 速度调节器
C. 附件齿轮箱和IDG中的CSD(恒速驱动装置)
D. IDG(整体驱动发电机)
【单选题】
电源系统中,工作人员操作驾驶舱头顶电气面板上相应的发动机或APU的“GEN”电门。系统将通过各自的(——)去控制相应发电机输出电源。___
A. GCU(发电机控制器)
B. GLC(发电机电路接触器)
C. GPCU(地面电源控制器)
D. EGIU(电源接口组件)
【单选题】
电源系统中,提供直流电的电源包括有:___
A. 两台相同的电瓶
B. 三台相同的TR(变压整流器)
C. 两台相同的电瓶以及三台相同的TR(变压整流器)
D. 两台相同的电瓶以及一台静变流机
【单选题】
电源系统中,外部电源的故障是由下列哪个部件探测:___
A. GCU
B. GPCU
C. CFDIU
D. EGIU
【单选题】
电源系统中,下列哪些被系统探测到的故障会导致发动机相应的发电机切断或停止工作?___
A. IDG被脱开、ENG火警电门被作动、PMG(永磁发电机)短路
B. 发生了过/欠电流、电压、频率故障;
C. 输电电缆开路或短路;差动保护
D. A、B、C均正确
【单选题】
电源系统中EGIU的主要功能是:___
A. 控制发电机电压的产生并保护发电机
B. 提供电源系统的自检功能,并发送关联的警告
C. 处理来自GCU和关联发电机的参数,并通过系统数据采集器(SDAC)传输信息到驾驶舱
D. A、B、C均是EGIU的主要功能
【单选题】
电源系统中安装在发动机上的整体驱动发电机(IDG)包括了:___
A. 附件齿轮箱和发电机
B. 附件齿轮箱和恒速驱动装置(CSD)
C. 恒速驱动装置(CSD)和发电机
D. 附件齿轮箱、恒速驱动装置(CSD)和发电机
【单选题】
飞机电瓶的主要功用是:___
A. 在飞行或在地面状态下,提供起动APU的电源
B. 在应急状态下,向基本汇流条提供电源
C. 在飞行或在地面状态下,提供起动APU的电源;在应急状态下,向基本(ESS)汇流条提供电源
D. 在飞行或在地面状态下,提供起动APU的电源;在多数电源构型状况下,向基本(ESS)汇流条提供电源
【单选题】
飞机电瓶的主要性能参数是:___
A. 13AH;20VDC
B. 23AH;24VDC
C. 33AH;32VDC
D. 43AH;40VDC
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