英美文化chapter8翻译

练习十六 电磁感应定律 动生电动势

一、选择题

1. 尺寸相同的铁环与铜环所包围的面积中，通以相同变化率的磁通量，则环中： (A) 感应电动势不同, 感应电流不同. (B) 感应电动势相同，感应电流相同. (C) 感应电动势不同, 感应电流相同. (D) 感应电动势相同，感应电流不同.

2. 如图16.1所示，一载流螺线管的旁边有一圆形线圈，欲使线圈产生图示方向的感应电流i，下列哪种情况可以做到？

i (A) 载流螺线管向线圈靠近；

(B) 载流螺线管离开线圈； (C) 载流螺线管中电流增大；

(D) 载流螺线管中插入铁芯.

I 图16.1

3. 在一通有电流I的无限长直导线所在平面内, 有一半径为r、电阻为R的导线环,环中心距直导线为a，如图16.2所示，且a>>r.当直导线的电流被切断后,沿导线环流过的电量约为

(A) (B) (C) (D)

?0Ir2?R2(21a?1a?r).

I a r ?0Ia2rR.

ln2?0Ir2?Ra?ra.

图16.2

?0Ir2aR.

4. 如图16.3所示，导体棒AB在均匀磁场中绕通过C点的垂直于棒长且沿磁场方向的轴OO?转动(角速度?与B同方向), BC的长度为棒长的1/3. 则:

习题8

一、选择题 ’

1．下列哪一组协议属于应用层协议?

a. IP，TCP和UDP b．ARP，p和UDP

c．FTP，SMTP和TELNET d．ICMP，RARP和ARP

解答：c

2．在下面列出的UNIX命令中，哪一个在远程主机上执行一条指定的命令?

a．ftp b．rcp C．rsh d．telnet 解答；c

3．在下面列出的TCP／IP命令中，哪一个可以被用来远程上机到任何类型的主机?

a．ftp

b．telnet c．rlogin d．tftp

解答：b

4．在下面列出的UNIX命令中，哪一个可以被用来远程上机到另一台UNIX主机?

a．ftp

b．telnet C．rlogin d．tftp

解答：c

5．下列哪一项形成NFS(网络文件系统)的基础软件层次?

a．UDP b．IP C．RPC

d．XDR

e．上列所有4项

解答：e

6．为出口文件系统，你必须在下列哪个UNIX文件中指定文件系统和用户?

a．/etc/rc.local b．

练习十六 电磁感应定律 动生电动势

一、选择题

1. 尺寸相同的铁环与铜环所包围的面积中，通以相同变化率的磁通量，则环中： (A) 感应电动势不同, 感应电流不同. (B) 感应电动势相同，感应电流相同. (C) 感应电动势不同, 感应电流相同. (D) 感应电动势相同，感应电流不同.

2. 如图16.1所示，一载流螺线管的旁边有一圆形线圈，欲使线圈产生图示方向的感应电流i，下列哪种情况可以做到？

i (A) 载流螺线管向线圈靠近；

(B) 载流螺线管离开线圈； (C) 载流螺线管中电流增大；

(D) 载流螺线管中插入铁芯.

I 图16.1

3. 在一通有电流I的无限长直导线所在平面内, 有一半径为r、电阻为R的导线环,环中心距直导线为a，如图16.2所示，且a>>r.当直导线的电流被切断后,沿导线环流过的电量约为

(A) (B) (C) (D)

?0Ir2?R2(21a?1a?r).

I a r ?0Ia2rR.

ln2?0Ir2?Ra?ra.

图16.2

?0Ir2aR.

4. 如图16.3所示，导体棒AB在均匀磁场中绕通过C点的垂直于棒长且沿磁场方向的轴OO?转动(角速度?与B同方向), BC的长度为棒长的1/3. 则:

Chapter 4 Economy Recent History of British Economy * Economic decline

* After World War II, the British economy experienced a period of great difficulty and relative economic decline. Causes

* two World Wars-great economic loss

* the era of the British Empire was over-decolonization (losses of raw material & market) * military expense (until the process of decolonization completed in the 1960s) Policies

* \

* an economy in which there is some public ownership as well as privately owned business

* During the 20t

Unit1.

1)American National Flag

? “Stars and Stripes” ? “Star-Spangled Banner” ? 50 stars and 13 stripes

? Meaning: 50 present states, and the 13 earliest state ? 星条旗 2)American Geography

? The Fourth Largest Country ? Western Hemisphere ? North: Canada

? South: Mexico and Gulf of Mexico ? West: Pacific Ocean ? East: Atlantic Ocean

? Climate: Northern Temperate Zone 3)One River: Mississippi River

3rd longest river in the world “father of waters” “Old Man river” dividing line of “East” and “West” 4)Two M

名词解释

1：The Dreaming

The Drenming is the belief system from ancient times that has bound indigenous groups together .The central principle of the dreaming is that the people who live on the continent have special responsibilities to the land .The people don’t own the land ,instead the land own the people .The stories of the dreaming provide principles of how people should live and interact with each other .They also provide knowledge of the land so that the indigenous people can survive in the life—threatening environment .

Us 3

In 1782, the french who settled in pennsy first asked the question " what is an American" in his book Letters from An American Farmer.

The New world of america was peopled as a result of two long-continuing immigration movements, the first one from Asia and the second from Europe and Africa.

American indians had developed three brilliant civilizations before the Europeans arrived. These three civilizations were the Aztecs, the Incas and the Mayas. Columbus discovered the new world in the year of 1492

The English

Unit1.

1)American National Flag

? “Stars and Stripes” ? “Star-Spangled Banner” ? 50 stars and 13 stripes

? Meaning: 50 present states, and the 13 earliest state ? 星条旗 2)American Geography

? The Fourth Largest Country ? Western Hemisphere ? North: Canada

? South: Mexico and Gulf of Mexico ? West: Pacific Ocean ? East: Atlantic Ocean

? Climate: Northern Temperate Zone 3)One River: Mississippi River

3rd longest river in the world “father of waters” “Old Man river” dividing line of “East” and “West” 4)Two M

“British history has been a history of invasions”what’s your idea about it? British history has been a history of invasions.

The United Kingdom of Great Britain and Northern ireland. Northwestern Europe Island, land on the island of Great Britain from England, Scotland, Welsh and the island of Ireland Northern Ireland 4 sections and numerous small islands.

British used to be invaded by the Roman Empire. Germanic people, the Vikings and Normans. Before the first century AD Britain was made up of many tribal kingdoms

1、 The plot in an ad of HSBC is the Chinese boss invite British colleague to the restaurant , the boss order a bowl of eel noodles. Although

the British colleagues think it has substandard appetite, but in order to show politeness, he quickly eat them up; But in the boss/ s opinion, this express that British colleagues did not have enough and to some extent he suspected his stingy performance, so the boss has ordered a larger eel noodles, who knows the British colleague eat them up again , finaliy the boss ordered the la