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In 1948, people living in remote areas could see TV programs by ______ in the Un
In 1948, people living in remote areas could see TV programs by ______ in the Un
游客
2024-06-13
2
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问题
In 1948, people living in remote areas could see TV programs by ______ in the United States. [br] 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]。
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