()涉及到把两个网络连接在一起的问题。A、会话层 B、表示层 C、物理层 D、网际互

题型:单项选择题

问题:

()涉及到把两个网络连接在一起的问题。

A、会话层

B、表示层

C、物理层

D、网际互联

考点:通信工程师局域网和城域网局域网和城域网题库
题型:单项选择题

在19世纪的科学家中,其科学思想对于解放人们思想的作用,可以与哥白尼太阳中心说媲美的是 [ ]

A.爱因斯坦的相对论

B.牛顿的力学体系

C.达尔文的进化论

D.普朗克的量子论

题型:单项选择题

“日出江花红胜火,春来江水绿如蓝”.春天来了,使江水泛起绿色的原因是(  )

A.江水本无色,是反射岸上景物的颜色

B.雨水增多,江水变深的结果

C.水中藻类植物大量繁殖的结果

D.两岸绿树的倒影

题型:单项选择题

D

Life is difficult.

It is a great truth because once we truly understand and accept it, then life is no longer difficult.

Most do not fully see this truth. Instead they complain about their problems and difficulties as if life should be easy. It seems to them that difficulties stand for a special kind of suffering especially forced on them or else on their families, their class, or even their nation.

What makes life difficult is that the process of facing and solving problems is a painful one. Problems, depending on their nature, cause sadness, or loneliness or regret or anger or fear.

These are uncomfortable feelings, often as painful as any kind of physical pain. And since life causes a lot of problems, life is always difficult and is full of pain as well as joy.

Yet, it is in this whole process of solving problems that life has its meaning. Problems are the serious test that tells us success from failure. When we want to encourage the growth of human spirit, we encourage the human ability to solve problems, just as in school we set problems for our children to solve. It is through the pain of meeting and working out problems that we learn. As Benjamin Franklin said, “Those things that hurt, instruct(指导).” It is for this reason that wise people learn not to fear but to welcome the pain of problems.

小题1:Which sentence best express the central point of the passage?

A.Problems and difficulties represent a special kind of suffering.

B.We become stronger by facing and solving problems of life.

C.Life is difficult because our problems bring us pain.

D.People like to complain about their problems.小题2:The writer probably used just one short sentence in the first paragraph to ___.

A.save space

B.persuade readers

C.make readers laugh

D.get readers’ attention小题3:The main idea of paragraph 3 is that _________.

A.most people feel life is easy

B.the writer feel life is easy

C.the writer likes to complain about his problems

D.most people complain about how hard their lives are小题4:According to the passage, we give school children difficult problems to solve in  order to ______.

A.encourage them to learn

B.teach them to fear the pain of solving the problems

C.help them learn to deal with pain

D.teach them how to respect problems小题5:The saying from Benjamin Franklin “Those things that hurt, instruct” suggests that ______.

A.we do not learn from experience

B.we do not learn when we are in pain

C.pain teaches us important lessons

D.pain cannot be avoided

题型:单项选择题

代偿期肝硬化诊断主要依赖()

A.肝穿

B.肝脾肿大

C.肝脏储备功能检查

D.肝纤维化指标检测

E.严重的肝损害

题型:单项选择题

常用滤油机的种类及其容量有哪些?

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