2. 外语
  3. In 1948, people living in remote areas could see TV programs by ______ in the United States. As the bandwidth increased to 550

In 1948, people living in remote areas could see TV programs by ______ in the United States. As the bandwidth increased to 550

admin2009-08-19  37
问题 In 1948, people living in remote areas could see TV programs by ______ in the United States.
As the bandwidth increased to 550 MHz, the number of TV channels increased by ______compared with the early cable systems.
选项 A、24
B、33
C、58
D、91
答案C
解析 本题涉及到电视节目数量的比较。该段提到早期的电缆系统只能收到33个频道，随着技术的进步，当频宽增加到550 MHz时，电视频道增加到91个，也就是说，与早期的电缆系统相比，电视频道增加了58个，故答案为 [C]。
转载请注明原文地址:https://jikaoti.com/ti/sU0MFFFM
0

大学英语六级

相关试题推荐
随机试题
最新回复(0)