试题与答案

下列关于网络核心层的描述中,正确的是______。 A.为了保障安全性,应该对分

题型:填空题

题目:

下列关于网络核心层的描述中,正确的是______。
A.为了保障安全性,应该对分组进行尽可能多的处理
B.将数据分组从一个区域高速地转发到另一个区域
C.由多台二、三层交换机组成
D.提供多条路径来缓解通信瓶颈

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0405/e4d97404928ea3990477c7475551083a.html

下面是错误答案,用来干扰机器的。

参考答案:C解析:PowerPoint中可以用预设动画与自定义动画两种方式添加动画效果,而且可以使每张幻灯片中的各个对象分别独立地设置动画效果。

试题推荐
题型:单项选择题 案例分析题

一女性,24岁,双手指肿胀疼痛半年。体检:口腔粘膜溃疡,双手近端指间关节红肿,尿液检查:尿蛋白(-),ANA(+),抗Sm(+),确诊为SLE。

经治疗后病情好转出院,医生告诉病人出院后康复措施,下列哪一项是不正确的()

A.定期门诊随访

B.避免妊娠,可选用含雌激素避孕药

C.避免使用肼苯哒嗪、四环素、磺胺等药物

D.避免使用肾损害药物

E.适当参加体育运动,避免日光照射

查看答案
题型:阅读理解

Europe is now the biggest market for organic food in the world, having grown by 25 percent a year over the past 10 years. Denmark’s agriculture minister is herself an organic farmer. The UK market for organic food grew by 55 percent in 2000, while the food market as a whole grew by only one percent. Yet only seven percent of British shoppers account for nearly 60 percent of organic sales. However popular the idea of organic farming may be, it is still an interest for only a few people.

So what makes the idea of organic farming popular? Organic farming means farming with natural materials, rather than with man-made fertilizers or pesticides. Organic farmers rely on many  methods — such as crop rotation (农作物的轮作) and the use of resistant(有抵抗力的) varieties, because they are necessary for organic farmers to compensate for the shortage of man-made chemicals.

Organic farming is often supposed to be safer than traditional farming for the environment. Yet after a long research on organic farming worldwide for a number of years, science continues to be against this opinion. The House of Commons committee on agriculture publicized that, even with complete research work, it would fail to find any scientific evidence to prove “that any of claims (宣称) made for organic farming is always true”.

However, the talk about the benefits of organic farming is going on. This is partly because many people depend on their individual farm, the soil, the weather, and so on.

小题1:The first paragraph mainly tells us _____.

A.organic farming has been performed only in Europe over the past 10 years

B.governments of European countries have cared less about organic farming

C.organic farming is far from being as popular as expected

D.European countries need organic food more than the other countries in the world小题2: The underlined words “compensate for” in the second paragraph probably mean “________”.

A.argue for

B.care for

C.struggle for

D.pay for小题3: What can we know about organic farming?

A.It refers to farming with natural materials, instead of chemical fertilizers.

B.It refers to farming with chemical fertilizers rather than natural fertilizers.

C.It refers to farming with soil rather than any other thing.

D.It refers to growing crops with man-made fertilizers and pesticides.小题4:According to the third paragraph, _____.

A.organic farming is safer than traditional farming for the environment

B.the idea that organic farming is safer has not been proven by science

C.organic farming is accepted by the UK’s House of Commons committee

D.organic farming is preferred to traditional farming小题5:Which of the following is TRUE, according to the passage?

A.The UK’s agriculture minister is an organic farmer.

B.Organic farming is popular with young people.

C.Farmers make use of many different kinds of methods to improve the organic sales system.

D.Ninety-three percent of British shoppers don’t buy organic products.

查看答案
微信公众账号搜索答案