ICMP协议属于TCP/IP网络中的(1)协议,ICMP报文封装在(2)协议数据单元

题型:单项选择题

问题:

ICMP协议属于TCP/IP网络中的(1)协议,ICMP报文封装在(2)协议数据单元中传送。 空白(2)处应选择()

A.IP

B.TCP

C.UDP

D.PPP

考点:计算机软件水平考试初级网络管理员2011下半年初级网络管理员上午真题
题型:单项选择题

有A、B、C、D四种金属。将A与B用导线连接起来,浸入电解质溶液中,B为正极;将A、D分别投入等浓度盐酸中,D比A反应剧烈;将铜浸入B的盐溶液里,无明显变化;如果把铜浸入C的盐溶液里,有金属C析出。据此判断它们的活动性由强到弱的顺序是[ ]

A.D>C>A>B

B.D>A>B>C

C.D>B>A>C

D.B>A>D>C

题型:单项选择题

具有利胆退黄作用,常用于治疗黄疸型肝炎的药物是

A.泽泻
B.茵陈
C.茯苓
D.秦艽
E.麻黄

题型:单项选择题

Driving to a friend’s house on a recent evening, I was struck by the sight of the full moon rising just above my friend’s rooftops, huge and round, yellow through the dust and smoke of the city. I stopped to watch it for a few moments, thinking what a pity it was that most city livers---myself included---usually miss sights like this because we spend most of our lives indoors.

My friend had also seen it. He grew up living in a forest in Europe, and the moon meant a lot to him then. It had touched much of his life.

I know the feeling. Last December I took my seven-year-old daughter to the mountainous jungle of northern India with some friends. We stayed in a forest rest house with no electricity or hot water. Our group had campfires outside every night, and indoors when it was too cold outside. The moon grew to its fullest during our trip. Between me and the high mountains lay three or four valleys. Not a light shone in them and not a sound could be heard. It was one of the quietest places I have ever known, a bottomless well of silence. And above me was the full moon.

Today our lives are connected with glass, metal, plastic and fiber-glass. We eat and breathe things our bodies were not designed to process. We have televisions, cell phones, pagers, electricity, heaters, air-conditioners, cars and computers. White noise and pollution is in the air. Radio waves and strange lights are constantly disturbing our minds and bodies.

Struggling through traffic that evening at the end of a tiring day, most of it spent indoors, I saw the moon and remembered these things. And I thought: before long, I would like to live in a small cottage. There I will grow vegetables and read books and walk in the mountains and perhaps write. I may grow old there. But I will be able to walk outside on a cold silent night and touch the moon.

小题1:What was the author’s pity in this passage?

A.Most people living in the city failed to see the beautiful moon.

B.There was too much pollution in the city.

C.There were too many modern inventions.

D.There was too much traffic on the road.小题2:What attracted the author most according to the passage?

A.The mountainous jungle of India.

B.The fullest moon.

C.The high mountains in India.

D.All kinds of modern inventions.小题3:The author longs for ________.

A.Camping outside at night

B.Returning to the nature

C.Writing books

D.Watching the moon小题4:The main idea of this passage probably is “________”.

A.Disadvantage of Living in Cities

B.The Pleasure of Being out at Night

C.Touched by the Moon

D.Pollution Caused by Modern Technology

题型:单项选择题

什么叫调节阀流量特性?

题型:单项选择题

针刺治疗口眼歪斜的常用穴位为()

A.颊车

B.地仓

C.合谷

D.中脘

E.太冲

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