问题 选择题

在比例尺1:5000000的地图上,图上1厘米代表实际距离是(  )

A.500千米

B.50000米

C.5千米

D.30000米

答案

比例尺1:5000000是数字式,转化成文字式为:图上1厘米代表实际距离50千米,也就是50000米.故选项A.C.D.都不符合题意.

故选:B.

阅读理解

It was a winter morning, just a couple of weeks before Christmas 2005. While most people were warming up their cars, Trevor, my husband, had to get up early to ride his bike four kilometers away from home to work. On arrival, he parked his bike outside the back door as he usually does. After putting in 10 hours of work, he returned to find his bike gone.

The bike, a black Kona 18 speed, was our only transport. Trevor used it to get to work, putting in 60-hour weeks to support his young family. And the bike was also used to get groceries(食品杂货),saving us from having to walk long distances from where we live.

I was so sad that someone would steal our bike that I wrote to the newspaper and told them our story. Shortly after that, several people in our city offered to help. One wonderful stranger even bought a bike, then called my husband to pick it up. Once again my husband had a way to get to and from his job. It really is an honor that a complete stranger(陌生人) would go out of their way for someone they have never met before.

People say that a smile can be passed from one person to another, but acts of kindness from strangers are even more so. This experience has had a spreading effect in our lives because it made our confidence in humanity(人性)stronger as a whole. And it has also influenced us to be more mindful(在意的) of ways we can share with others. No matter how big or how small, an act of kindness shows that someone cares. And the results can be continuing for ever.

小题1:Why was the bike so important to the couple?

A.They used it for work and daily life.

B.It was borrowed from their friend.

C.It was a nice Kona18 speed.

D.The man's job was bike racing.小题2:We can learn from the text that ________.

A.the couple worked60 hours a week.

B.people were busy before Christmas

C.the stranger brought only the bike.

D.life was hard for the young family.小题3:How did people get to know the couple's problem?

A.From radio broadcasts.

B.From a newspaper.

C.From TV news.

D.From a stranger.小题4:What do the couple learn from their experience?

A.Strangers are usually of little help.

B.One should take care of their bike.

C.News reports make people famous.

D.An act of kindness can mean a lot.

单项选择题

某大学新校区拟建设校园网,委托甲公司承建。甲公司的张工程师带队去进行需求调研,获得的部分需求如下:
(1)信息中心距图书馆的管道长度约1.5km,距教学科研楼约350m,距综合实验楼约200m。
(2)图书馆的汇聚交换机置于图书馆主机房内,楼层设备间共两个,分别位于二层和四层,距图书馆主机房距离均大于160m;其中,二层设备间负责一、二层的计算机接入,每层约有30个信息点;四层设备间负责三、四、五层的计算机接入,每层约有26个信息点。
(3)学校网络要求“千兆干线,百兆到桌面”。
(4)信息中心有两条百兆出El线路,在防火墙上根据外网IP设置出口策略,分别从两个出口访问Internet。
(5)信息中心共有多台服务器,通过交换机接入防火墙
(6)信息中心提供的信息服务包括Web、FTP、E-mail、数据库、流媒体等,数据流量较大,要求干兆接入。
在满足网络功能的前提下,本着尽可能节约成本的综合布线选型原则,信息中心与图书馆、教学科研楼、综合实验楼之间的传输介质类型,张工最可能选择的方案是______。
对于图书馆的汇聚交换机,张工最可能选择的方案是______。
对于教学科研楼中连接至每台计算机的交换机,张工最可能选择的方案是______。
根据需求描述和所选交换机类型,图书馆二层设备间、四层设备间分别需要的同一型号交换机的最少台数是______。
对于Internet出口处的防火墙设备,张工最可能选择的方案是______。

A.24个千兆SFP,背板带宽=192G,包转发率=150Mpps
B.12个固定千兆RJ45接口,背板带宽=24G,包转发率=18Mpps
C.24个固定百兆RJ45接口,1个GB IC插槽,包转发率=7.6Mpps
D.背板带宽=1.8T,包转发率=300Mpps,业务插槽数量=8,支持电源冗余