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【单选题】
下列关于数据链路,说法正确的是A.
链路 (link) 是一条无源的点到点的物理线路段，中间可以有其他的交换结点。
B.
数据链路 (data link) 除了物理线路外，还必须有通信协议来控制这些数据的传输。
C.
现在最常用的方法是使用交换机来实现数据链路协议的硬件和软件。
D.
一般的适配器都包括了数据链路层和网络层这两层的功能。
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举一反三
【单选题】According to the passage, which of the following is true about Native American traditions of conservation?
A.
They were known in the past.
B.
They won’t be replaced by the new ones.
C.
They show that not all new ideas are correct.
D.
They are neglected nowadays.
【单选题】Why did AIM organize a number of demonstrations from the late 192s through the late 1970s?
A.
To demonstrate their power and show their determination to fight against the government.
B.
To draw public attention to the poor conditions of Native American reservations throughout the United States and to protest the U.S, government's treatment of Native Americans and the loss of their ancestral lands.
C.
To appeal to the people to invest more money on the Native American.
D.
To protest the Vietnam War.
【单选题】Why does the professor mention the effect of education on Native American societies?
A.
to indicate the content of a course he thinks the woman should take.
B.
to learn more about the woman's experiences over the summer.
C.
to describe a research project he thinks the woman would find interesting
D.
to show his approval of the woman's career goals.
【单选题】听力原文：M: The native American craft exhibit closed this afternoon. W: Oh, no. I've wanted to see that for months. Q: What does the woman imply? (14)
A.
She wanted to show people her crafts.
B.
She has seen the exhibition.
C.
She'd rather go hack home.
D.
She's sorry to have missed the exhibit.
【简答题】什么是构件的强度问题?什么是构件的稳定问题?为什么稳定问题可一律用全截面计算?
【简答题】Part 3 Multiple choice 1. What is the main purpose of the talk? A. To contrast Native American and European concepts of resources B. To explain why Native Americans valued personal alliances C....
【简答题】简析《骄傲的将军》的艺术特色和历史地位。
【单选题】The example of Native American Iroquois is used in paragraph 2 to ______.
A.
show the differences between nations and states
B.
discuss the differences between internal and external affairs
C.
indicate their strive to form. a state
D.
present their identity as a people
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