【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
查看试卷，进入试卷练习
微信扫一扫，开始刷题
相关试题
【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
【单选题】
Computer technology ___ individuals to educate themselves and adapt to a constantly changing job market.
A. lets
B. makes
C. enables
D. provides
推荐试题
【判断题】
行车中驾驶人意识到车辆爆胎时，在控制住方向下采取紧急制动，迫使车辆迅速停住。
【判断题】
驾驶机动车通过经常发生落石、塌方、泥石流的山区地段，要停车观察低速通过。
【判断题】
遇窄桥时，要注意观察对向来车并提前做好停让准备，避免在桥面上会车。
【判断题】
当机动车白天驶入黑暗隧道时，提前降低车速，使驾驶人适要光线变化。
【判断题】
火灾报警电话119，森林火灾报警电话12119。
【判断题】
发生火灾时，基本的正确应变措施是：发出警报，疏散，在安全情况下设法扑救。
【判断题】
消防器材、装备设施、不得用于与消防和抢险救援工作无关的事项。
【判断题】
任何单位、个人都有维护消防安全、保护消防设施、预防火灾、报告火警的义务。
【判断题】
室外消防栓是供消防车，清洗马路、公共绿化的供水设备。
【判断题】
火灾烟气因为温度较高，通常在室内空间上部。
【判断题】
凡是能引起可燃物着火或爆炸的热源统称为点火源。
【判断题】
走廊、楼道等公用区域可以放置、堆积其他杂物。
【判断题】
电加热设备使用时必须有人在场，离开时切断电源。
【判断题】
维修场所抹过油的废布废棉丝不能随意丢放，应放在废纸箱内。
【判断题】
烟头虽小，但其温度一般都在700～ 800℃左右，一旦与油类、纸张、木材、棉布等相互接触容易发生火灾。
【判断题】
疏散指示标志是指用于火灾时人员安全疏散时有指示作用的标志。
【判断题】
疏散通道、安全出口可以设置必要的防火门，但严禁安装铁栅栏。
【判断题】
某单位在没有办理动火许可证的情况下，领导指令工人明火作业，结果发生火灾造成严重后果，该领导犯了重大责任事故罪而受到刑事处分
【判断题】
火场上扑救原则是先人后物、先重点后一般、先控制后消灭。
【判断题】
为了防止触电可采用绝缘.防护.隔离等技术措施以保障安全。
【判断题】
在潮湿的场所或金属构架上等导电性能良好的作业场所，必须使用II或III类电动工具。
【判断题】
表示设备断开和运行的信号装置和仪表的指示只能作为无电的参考，不能作为设备无电的依据。
【判断题】
机械设备超过检修期或超负荷运行或设备有缺陷不采取措施造成事故的，领导可以不负领导责任。
【判断题】
设备的不安全状态是指设备先天不足，缺乏安全装置，结构不合理，强度达不到要求等。
【判断题】
对于正在转动中的机器，因生产紧张，可以视情况迅速装卸和校正皮带。
【判断题】
设备管理“三个必有”：有洞必有盖；有边必有栏；有轮必有罩。
【判断题】
雷雨天，不要进入高压电杆、铁塔、避雷针的接地导线周围20m内。
【判断题】
配电箱.开关箱内不得放置任何杂物，应保持清洁。
【判断题】
在扑救电气火灾时，如果向没有切断电源的电线或设备射水，要采用从侧面射水的方法。
【判断题】
打雷、暴雨、大雪、大风天气，只要带上必要的防护设备，可以上钻机顶部作业。
【判断题】
采掘设备移动不快时人员可以快速上、下设备。
【判断题】
为减少工作量，采场的每台设备可以不设专用的受电开关，可以多台设备共用一个开关控制。
【判断题】
检修变压器时，只需将高压侧的设备断开，低压侧视具体情况而言。
【判断题】
因应急所需，现场可以临时使用未经检验合格的电动工器具和安全工器具。
【判断题】
所有检查人员进入检修现场前必须与现场负责人取得联系，经同意后方可进入。
【判断题】
施工现场临时用电每台设备应配置专用的开关箱，一个开关只能控制一台设备（含插座)。
【判断题】
高处交叉作业时，下方人行通道上部必须采取防护措施。
【判断题】
在职业健康检查中，对需要复查的劳动者，不一定按照职业健康检查机构要求的时间安排复查和医学观察。
