【单选题】
下面属于TCP/IP协议族中网络互联层协议的是___。
A. IGMP、UDP、IP
B. IP、DNS、ICMP
C. ICMP、ARP、IP
D. FTP、IGMP、SMTP
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答案
C
解析
暂无解析
相关试题
【单选题】
协议是______之间进行通信的规则或约定。___
A. 同一结点上下层
B. 不同结点
C. 相邻实体
D. 不同结点对等实体
【单选题】
Having practiced so many times, I feel very ___ of my ability to deliver the presentation successfully.
A. satisfied
B. incredible
C. confident
D. enthusiastic
【单选题】
The university decided to increase the ___ of the lecture hall, which has only 200 seats.
A. ability
B. capacity
C. facility
D. faculty
【单选题】
Smart phones – with cameras and color screens – can ___ images and data using wireless network technology.
A. evolve
B. depart
C. transmit
D. assure
【单选题】
Don’t take someone you get to know from the Internet to your house no matter how ___ he sounds.
A. bold
B. genuine
C. flexible
D. available
【单选题】
This kind of exercise will ___ your creativity, renew your energy, and unlock your potential.
A. bind
B. yield
C. embrace
D. stimulate
【单选题】
I’ll be happy to help you, ___ you won’t take up too much of my time.
A. as well as
B. as long as
C. as far as
D. as soon as
【单选题】
We teachers do not consider it wise to ___ our students with all sorts of exams, tests and quizzes.
A. load
B. annoy
C. sample
D. explore
【单选题】
He makes his students ___ knowledge through various kinds of interesting activities.
A. study
B. learn
C. achieve
D. acquire
【单选题】
For years, scientists have debated the ___ dangers of building another nuclear plant after the terrible accident.
A. available
B. potential
C. fascinating
D. genuine
【单选题】
It was a worthwhile attempt ___ it failed to achieve its purpose that we had hoped for.
A. in the end
B. now that
C. all at once
D. even though
【单选题】
Travel in space can be very exciting; ___, it can also be boring and lonely at times.
A. so
B. however
C. thus
D. therefore
【单选题】
Politicians should not ___ in business affairs that might affect their political judgment.
A. engage
B. embrace
C. depart
D. treasure
【单选题】
I wish to ___ a master’s degree in electric engineering after I graduate from college.
A. pledge
B. explore
C. pursue
D. approach
【单选题】
There is no greater importance ___ cultivating independence in children.
A. in
B. than
C. of
D. with
【单选题】
He has made it very clear ___ we should observe the new rules.
A. what
B. which
C. those
D. that
【单选题】
It was when I read his letter ___ I realized he had given me huge help.
A. that
B. then
C. before
D. after
【单选题】
Don’t worry too much, Jane. Your son ___ home already. Let’s go back and check it out.
A. returned
B. will return
C. has returned
D. may have returned
【单选题】
I believe friendship is an essential element of making a healthy, ___ life.
A. flexible
B. rewarding
C. wealthy
D. inquisitive
【单选题】
___ they have written about the behaviors of animals is hardly anything new.
A. That
B. This
C. What
D. Which
【单选题】
No other drugs are as good as this one; it must have been based on a(n) ___ formula (配方).
A. enormous
B. stimulating
C. unique
D. overwhelming
【单选题】
Mothers tend to be too ___ toward their children. They should let them see more of the worl D.
A. hopeful
B. protective
C. modest
D. encouraging
【单选题】
The investigation ___ evidence of a large-scale illegal trade in wild birds.
A. uncovered
B. outweighed
C. overwhelmed
D. evolved
【单选题】
Poor Laura! I feel so sorry for her. When she fell, she hurt her arm and, ___, broke her glasses.
A. in advance
B. in addition
C. over time
D. on the other hand
【单选题】
Showing some sense of humor can be a(n) ___ way to deal with some stressful situations.
A. genuine
B. available
C. effective
D. favorite
【单选题】
It will be worth the efforts even if you fail; the rewards you ___ will be great.
A. reap
B. boast
C. assure
D. cultivate
【单选题】
He suggested transporting the supplies by air. But it is absolutely ___, for it will cost too much.
A. unusual
B. uncertain
C. impractical
D. impressive
【单选题】
The newspaper didn’t mention the ___ of the damage caused by the fire.
A. range
B. level
C. extent
D. quantity
【单选题】
Do you ___ her novels as serious literature or as mere entertainment?
A. classify
B. notify
C. simplify
D. justify
【单选题】
He doesn’t ___ of buying a house this year because the bank has refused to lend him any money.
A. afford
B. make the most
C. run out
D. stand a chance
【单选题】
If you don’t ___ cooking today, we can go out to eat at the new restaurant.
A. would like
B. go on with
C. feel like
D. figure out、
【单选题】
Bullying (恃强欺弱) can ___ a climate of fear and anxiety in school, and prevent students from focusing on their schoolwork.
A. keep back
B. give rise to
C. feel like
D. make use of
【单选题】
Science can now ___ many things which were thought to be mysterious by ancient people.
A. care for
B. lay out
C. account for
D. set up
【单选题】
The school has ___ many after-class activity groups for the pupils to make their spare time more colorful.
A. set up
B. set off
C. set out
D. set down
【单选题】
When he was a small kid, he ___ from his peers because he could read fast and remember whatever he rea D.
A. showed off
B. worked out
C. stood out
D. straightened up
【单选题】
The fall in the number of deaths from heart disease is generally ___ improvements in diet.
A. put up with
B. attributed to
C. added to
D. replaced with
【单选题】
We can be partners for now, but ultimately you have to ___ to develop a new software for our project.
A. keep up
B. fire off
C. make sense
D. take the lead
【单选题】
Emotional Intelligence (情商) could be of practical use in many ___ such as how companies decide which job applicant to hire, how parents should raise their children, how schools should teach the students, and so on.
A. aspects
B. disciplines
C. structures
D. opportunities
【单选题】
The teacher should praise students for their correct answers and also suggest ___ possibilities.
A. unlimited
B. unique
C. alternative
D. essential
【单选题】
In some classrooms, desks are arranged in a U-shape, so the teacher can ___ easily with the students.
A. interrupt
B. interact
C. interpret
D. interview
推荐试题
【单选题】
勤务汇流条功能___
A. 仅整机断电时提供驾驶舱照明
B. 仅整机断电时提供客舱照明
C. 整机断电时提供所有地面服务照明和供电
D. 不能操作货舱门
【单选题】
静变流机将来自电瓶汇流条的直流电压转变成___
A. 单相115伏,400赫兹交流
B. 三相115伏,400赫兹交流
C. 28伏直流
D. 26伏,400赫兹交流
【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. GAPCU(对于增强型320)或者GPCU(对于传统构型320)
D. EGIU(电源接口组件)
【单选题】
主发电机或APU发电机获得转速后,系统将通过控制发电机的()来实现电能的产生。___
A. 输入转速
B. 励磁电压
C. 温度
D. 频率
【单选题】
应急发电系统中,应急马达发电机(CSM/G)由()驱动___
A. 来自黄液压系统的动力
B. 来自绿液压系统的动力
C. 来自蓝液压系统的动力
D. A、B、C均可驱动CSM/G
【单选题】
飞机在正常通电的情况下,飞机直流电源由()提供。___
A. 仅仅由一台电瓶提供直流电源,另一台作为备份直流电源使用
B. 由两台电瓶提供直流电源
C. 由两台电瓶和两台变压整流器器(TR1、TR2)提供直流电源
D. 由两台电瓶和三台变压整流器器(TR1、TR2、TR3)提供直流电源
【单选题】
在正常情况下,电网中的直流电源主要由()提供。___
A. TR1(变压整流器1)和TR2(变压整流器2)
B. TR1、TR2、及ESSTR
C. BAT1和BAT2
D. BAT1、BAT2、TR1、TR2、ESSTR
【单选题】
飞机在地面,如果电瓶电压低于()超过15秒,则电瓶电源会自动脱离飞机电网,实现放电保护。___
A. 低于5V
B. 低于23V
C. 低于26V
D. 低于28V
【单选题】
GAPCU(对于增强型320)或者GPCU(对于传统构型320)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】
当IDG(整体驱动发电机)被脱开后,在()完成复位工作。___
A. 空中或地面,发动机运转的状态下由飞行员完成
B. 在空中状态下由飞行员完成;在地面,发动机切断的状态下由地面勤务人员完成
C. 只能在空中,发动机运转的状态下完成
D. 只能在地面状态下完成
【单选题】
飞机电源系统在紧急的情况下,静变流机将来自()的28V直流电转换为115V交流电提供给飞机基本重要系统使用。___
A. BAT1
B. BAT2
C. BAT1和BAT2共同提供
D. BAT1或BAT2
【单选题】
下列哪个继电器实现了对发电机的励磁调节___
A. GCU
B. SVR
C. PRR
D. GCR
【单选题】
GLC继电器的开关受谁控制?___
A. GCU
B. SVR
C. PRR
D. GCR
【单选题】
当TR2失效的时候,直流重要汇流条通过什么部件获得电源?___
A. ESS-TR
B. 直流电瓶汇流条
C. 2号电瓶
D. 1号电瓶
【单选题】
下列哪个工作不能从勤务汇流条中获得电源?___
A. 开关货舱门
B. APU舱门的照明
C. 应急灯光
D. 电子舱的照明
【单选题】
下列哪个不是BCL的作用?___
A. 辅助APU启动
B. 阻止电瓶完全放电
C. 保护直流供电网络
D. 控制电瓶的充电
【单选题】
在正常情况下ACBUS1向ACESSBUS及ACSHEDESSBUS提供电源。当ACBUS1失去电源后,可以通过()继续向ACESSBUS和ACSHEDESSBUS供电。___
A. 电源控制系统将自动接通ACBUS2
B. 人工按压驾驶舱头顶电源面板上的“ACESSFEED”电门,接通ACBUS2电源
C. 静变流机将自动工作
D. TR(变压整流器)将自动工作
【单选题】
当直流电网中,如果TR1、TR2单独或同时发生故障,此时()将向部分直流电网供电。___
A. BAT1(1号电瓶)
B. BAT2(2号电瓶)
C. 静变流机
D. ESSTR()
【单选题】
飞机电瓶的主参数是通过()在()显示。___
A. 相应的BCL(电瓶充电限制器);下ECAM显示器上的ELEC页面
B. 相应的BCL(电瓶充电限制器);上ECAM显示器上的ELEC页面
C. 相应的GCU;下ECAM显示器上的ELEC页面
D. 相应的GCU;上ECAM显示器上的ELEC页面
【单选题】
电源系统中IDG(整体驱动发电机)通过()从()获得足够的转速。___
A. 附件齿轮箱;发动机的LP转子
B. 恒速装置;发动机的LP转子
C. 附件齿轮箱;发动机的HP转子
D. 恒速装置;发动机的HP转子
【单选题】
外电源系统中()检测电源质量处于良好状态后,系统发出信号去:___
A. GPCU;燃亮驾驶舱头顶板外电源面板“EXTPWR”电门上“AVAIL”标示及外电源插座托架“EXTPWR/AVAIL”琥珀色灯
B. GCU1;燃亮驾驶舱头顶板外电源面板“EXTPWR”电门上“AVAIL”标示及外电源插座托架“EXTPWR/AVAIL”琥珀色
C. GPCU;燃亮驾驶舱头顶板外电源面板“EXTPWR”电门上“AVAIL”标示及外电源插座托架“EXT/PWRNOTINUSE”白色灯
D. GCU1;燃亮驾驶舱头顶板外电源面板“EXTPWR”电门上“AVAIL”标示及外电源插座托架“EXTPWR/AVAIL”琥珀色
【单选题】
当工作人员在进行维护作业的过程中,断开驾驶舱后跳开关面板上的某个跳开关,稍后在ECAM显示器上出现相关跳开关的信息,这说明该跳开关:___
A. 被脱开跳开关所对应的系统探测到跳开关被断开,并通过相关系统在ECAM上显示
B. 系统维护作业程序中正常出现的现象,属于正常信息
C. 被脱开的电路跳开关包含有连接到SDAC的辅助线路
D. 被脱开的电路跳开关包含有连接到CFDS的辅助线路
【单选题】
在正常情况下ACBUS1向ACESSBUS及ACSHEDESSBUS提供电源。当飞机在失去ACBUS1和ACBUS2电源的紧急情况下,()将继续向ACESSBUS和ACSHEDESSBUS供电。___
A. 静变流自动工作
B. TR(变压整流器)将自动工作
C. 不论RAT状况如何,CSM/G(应急马达发电机)将自动工作
D. 当RAT提供的液压动力可用的情况下,CSM/G(应急马达发电机)将自动工作
【单选题】
0在地面维护过程中,工作人员发现主发电机按钮电门上的“FAULT”灯会燃亮,这说明:1)相应发电机按钮电门被松开;2)电路中的GLC(发电机电路接触器)受到GCU控制而脱开IDG与电网的连接;3)系统探测到故障的发生,GCU控制GLC脱开IDG与电网的连接___
A. 1)、2)
B. 1)、3)
C. 2)、3)
D. 1)、2)、3)
【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】
驾驶舱活动窗可打开于:___
A. A机内
B. B机外
C. C机内和机外
D. D只能在地面打开
【单选题】
A320飞机总共有几个应急滑梯?___
A. A.4个
B. B.6个
C. C.8个
D. D.10个
【单选题】
增强型驾驶舱舱门:___
A. A只能向驾驶舱开
B. B只能向客舱开
C. C正常向驾驶舱开,可用力向客舱开
D. D正常向客舱开,可用力向驾驶舱开
【单选题】
如滑梯不能自动充气:___
A. A它就不能被充气
B. B可以人工充气
C. C可用做手持救生滑梯
D. D以上B+C
【单选题】
滑梯不能自动充气怎么办?___
A. A此门不能用,旅客只能到另一出口
B. B可人工拉出红色的手柄充气
C. C将滑梯作为手持滑梯
D. D使用机上存放的气泵人工充气
【单选题】
驾驶舱中由几根撤离绳?___
A. A两根,每侧活动窗各一根,可用于左或右侧
B. B两根,只能用于对应的活动窗
C. C两名机组成员共三根,多余的一根用于特别高大的人
D. D四根,每个座位一根
【单选题】
Whichdevicehastobeunlockedbeforeclosingtheslidingwindow?___
A. A.Alockingpinontheslidingwindowframe
B. B.Theslidingwindowoperatinghandle
C. C.None
D.
【单选题】
Wherearepassengeroxygenmasksstored?___
A. A.InthePassengerServiceUnit
B. B.Intheseatarmrest
C. C.Intheoverheadstowagecompartment
D.
【单选题】
WhereistheinflationreservoiroftheescapeslideofA320emergencyexitlocated?___
A. A.Inacontaineratthebottomofthedoor
B. B.Inthecargocompartment
C. C.Intheoverheadstowagecompartmentoverthedoor
D.
【单选题】
Smokehoodsaresuppliedforthecabinattendantsto:___
A. A.supplyoxygenforpassengers
B. B.fightafireoragainstemissionofsmokeornoxiousgases
C. C.breatheoxygen
D.
【单选题】
A319飞机应急门如何解除预位?___
A. A.从外部开门自动解除预位
B. B.与客舱门滑梯解除预位的方法一样
C. C.逆时针转动90度,使锁销收回
D. D.顺时针转动90度,使锁销收回
【单选题】
A321紧急出口门的滑梯位于:___
A. A.机身中段机翼上方
B. B.后货舱
C. C.紧急出口门的下方
D. D.门本体上
【单选题】
A320系列飞机紧急出口滑梯的充气是由谁完成?___
A. A.滑梯气瓶的气体
B. B.飞机气源引气
C. C.人工吹气
D. D.滑梯气瓶的气体和外界大气