【单选题】
当网络A上的一个主机向网络B上的一个主机发送报文时,路由器需要检查_____地址。___
A. 物理
B. IP
C. 端口
D. 其他
查看试卷,进入试卷练习
微信扫一扫,开始刷题

答案
B
解析
暂无解析
相关试题
【单选题】
在下面对OSI参考模型的数据链路层的功能特性描述中,哪一项是不正确的?___
A. 通过交换与路由,找到数据通过网络的最有效的路径
B. 数据链路层的主要任务是提供一种可靠的通过物理介质传输数据的方法
C. 将数据分解成帧,按顺序传输帧,并处理接收端发回的确认帧
D. Ethernet的数据链路层分为LLC和MAC子层,并在MAC子层使用CSMA/CD协议争用信道
【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
【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、
推荐试题
【单选题】
胸腔闭式引流护理措施中错误的是___
A. 定期挤压引流管,保持通畅
B. 限制翻身,以减轻疼痛
C. 每日更换引流瓶
D. 协助病人取半卧位,有利于呼吸
E. 指导病人有效咳嗽
【单选题】
下列何种情况时需做口服葡萄糖耐量试验___
A. 空腹血浆葡萄糖>7.0mmol/L
B. 随机血浆葡萄糖>11.1mmol/L
C. 6.1 mmol/L <空腹血浆葡萄糖<7.0mmol/L
D. 空腹血浆葡萄糖<6.1mmol/L
E. 随随机血浆血糖>8.0 mmol/L
【单选题】
同时抽取几项检验血标本,注入容器的顺序是___
A. 抗凝管→血培养瓶→干燥试管
B. 干燥试管→抗凝管→血培养瓶
C. 血培养瓶→干燥试管→抗凝管
D. 血培养瓶→抗凝管→干燥试管
E. 抗凝管→干燥试管→血培养
【单选题】
抢救急危患者未能及时书写护理病历的处理,错误的是___
A. 应在抢救结束后6小时内据实补记
B. 抢救记录时间要求具体到分钟
C. 于护记单的病情与措施栏内空两格书写
D. 记录时间写补记的时间
E. 以上都错
【单选题】
皮下脂肪消失的一般顺序___
A. 躯干、四肢、臀部、腹部、面颊
B. 腹部、躯干、臀部、四肢、面颊
C. 躯干、臀部、四肢、面颊、腹部
D. 面颊、腹部、躯干、四肢、臀部
E. 以上都错
【单选题】
换药时伤口应如何依次进行处理___
A. 清洁伤口、隔离伤口、感染伤口
B. 清洁伤口、特殊感染伤口、污染伤口
C. 清洁伤口、隔离伤口、污染伤口
D. 清洁伤口、感染伤口、隔离伤口
E. 以上都错
【单选题】
患者陈某,男性,50岁,高血压脑出血患者,现生活不能自理,此时患者首要满足的需要是___
A. 生理的需要
B. 安全的需要
C. 爱与归属的需要
D. 自尊的需要
E. 自我实现的需要