[简答题]
An undersea fiber optic cable stretching from China to the United States in a loop system more than 25,000 kilometers underwater will soon expand China’s links with the world. The cable is expected to be completed in the year 2000.
This new fiber optic technology system will transmit voice, data and images at up to a total of 80 gigabits per second. The capacity of 80 gigabits per second is a massive speed advance on previous technology, and allows the transmission of more than one million calls simultaneously.
(61) The $1.5 billion China-US Cable Network, as it is called, provides a digital connection between China and the US, and overcomes the small fiber optic capacity which has been available, and which, among other things, affects the ability to expand Internet capacity. (Currently all links are via satellite). China Telecom has been trying for some time to set up a direct link with the US and this cable is a key project for the ninth Five-Year P

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[填空题]An undersea fiber optic cable stretching from China to the United States in a loop system more than 25,000 kilometers underwater will soon expand China’s links with the world. The cable is expected to be completed in the year 2000.
This new fiber optic technology system will transmit voice, data and images at up to a total of 80 gigabits per second. The capacity of 80 gigabits per second is a massive speed advance on previous technology, and allows the transmission of more than one million calls simultaneously.
(61) The $1.5 billion China-US Cable Network, as it is called, provides a digital connection between China and the US, and overcomes the small fiber optic capacity which has been available, and which, among other things, affects the ability to expand Internet capacity. (Currently all links are via satellite). China Telecom has been trying for some time to set up a direct link with the US and this cable is a key project for the ninth Five-Year Plan. China Tel

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[单项选择]Fiber-optic cables can carry hundreds of telephone conversations ______.
A. homogeneously
B. spontaneously
C. simultaneously
D. ingeniously

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[单项选择]The newest fiber-optic cables that carry telephone calls cross-country are made of glass so ______ that a piece 100 miles thick is clearer than a standard windowpane.
A. fragile
B. immaculate
C. tangible
D. transparent
E. iridescent

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[填空题]In some ways these schools are (differ)（）from Chinese middle schools.

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[多项选择]本题是判断一个字符串“Tom”是否在另外一个字符串“I am Tom, I am from China”中出现。
public class java1
public static void main(String[]args)
______;
str1="I am Tom, I am from China.";
str2="Tom";
int i=______;
if(______)
System.out.println("/""+str2+"/" is in the string:/""+str1+"/"");
else
System.out.println("/""+str2+"/"is not in the string:/""+str1+"/"");

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[简答题]HFC(Hybird Fiber-coaxial cable，混合光纤同轴电缆网)接入技术是以现有的有线电视网(CATV)为基础，综合应用模拟和数字传输技术、射频技术和计算机技术所产生的一种宽带接入网技术。图1-1所示的是HFC网络系统结构。
[*]
在HFC网络中从局端到用户端的数据传输过程中，语音信号、 (7) 和 (8) 送入合成器并形成混合信号，经光缆线路送到各小区的光纤节点，再经 (9) 将其传送到各用户综合服务单元。

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