从网络高层协议角度,网络攻击可以分为________。A.主动攻击与被动攻击 B.服

题型:单项选择题

问题:

从网络高层协议角度,网络攻击可以分为________。

A.主动攻击与被动攻击

B.服务攻击与非服务攻击

C.病毒攻击与主机攻击

D.侵入攻击与植入攻击

考点:计算机等级考试网络技术三级网络技术笔试
题型:单项选择题

蛹的生活状态是[ ]

A.不停地运动

B.不停地进食

C.形态不停地变化

D.不食不动

题型:单项选择题

第三部分:阅读理解(第一节15小题,第二节5小题;每小题2分,共40分)

第一节:阅读下列短文,从每题所给的四个选项(A、B、C、D)中,选出最佳选项

Everyone needs friends. We all like to feel close to someone. It is nice to have a friend to talk, laugh and do things with. Surely, there are times when we need to be alone. We don't always want people around. But we would feel lonely if we never had a friend.

No two people are the same. Sometimes friends don't get along well, which doesn't mean that they no longer like each other. Most of the time they will go on being friends. Sometimes friends move away, then we feel very sad. We miss them much, but we can call them and write to them. Maybe we would never see them again, and we can make new friends. It is surprising to find out how much we like new people when we get to know them. Families sometimes name their children after a close friend. Many places are named after men and women, if they are friendly to people in a town. Some libraries are named this way. So are some schools. We think of these people when we go to these places.

There's more good news for people, if they have friends. These people live longer than those people if those don't have friends. Why? It could be that they are happier. Being happy helps you stay well. Or it could be just knowing that someone cares, if someone cares about you, you take better care of yourself.

61. The first paragraph tells us __________.

A. none needs friends                      B. we always need friends around us

C. making friends is the need in people's life    D. we need to be alone

62. Which of the following is what the writer doesn't say in the passage?

A. People are happy when their friends leave them.

B. People may never see their friends after their friends move away.

C. People can know their friends in different ways.

D. People like their friends very much if they get to know them.

63. Which of the following is the most probable place people name after friendly people?

A. A house.      B. A room.       C. A library.      D. A village.

64. If people have friends, they would live longer, because __________.

A. they feel happier and healthier      B. they get a lot of help from their friends

C. they take better care of themselves   D. both A and C

65. This passage tells us __________.

A. that people are all friends             B. that people need friends

C. how to get to know friends            D. how to name a place

题型:单项选择题

巡警的建立与工作,其意义在于( )。

A.是公安工作由静态管理走向动态管理的新举措

B.是密切警民联系的新途径

C.震慑了犯罪分子

D.人民群众普遍有了安全感

题型:单项选择题

一般情况下,消防用电设备的配电线路明敷设时()敷设。

A、可不穿管

B、可穿PVC管

C、可穿阻燃PVC管

D、应穿金属管或封闭式金属线槽

题型:单项选择题

客货车辆要选择视野开阔、路面状况好的路段超车的原因是()。

A.质量大

B.加速时间较长

C.速度提高慢

D.超车时与其他车辆并行时间长

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