2. 职称英语
  3. 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  64
问题 In 1948, people living in remote areas could see TV programs by ______ in the United States. [br] What do we know about the "ghosting" from the passage?
选项 A、It is a double image of TV.
B、It refers to the speed of light.
C、It was eventually solved by engineers.
D、It refers to the speed of the radio signals.
答案 A
解析 本题涉及到“ghosting”的含义。该段提到无线电广播信号的速度与电视信号的速度，当这两个信号到达电视调谐器的时间间隔不到一秒时，电视上就会出现重影，这就叫做“ghosting”，故答案为[A]。
转载请注明原文地址:http://tihaiku.com/zcyy/3632787.html
相关试题推荐
随机试题
最新回复(0)