Radio operators often broadcast on the 6-meter band. The frequency of this electromagnetic radiation is __________ MHz.
A、500;
B、200;
C、50;
D、20;
E、2
发布时间：2025-02-28 11:43:44
请在 下方输入 要搜索的题目：
推荐参考答案 (
由 快搜搜题库 官方老师解答 )
答案：50
相关试题
- 1.Radio operators often broadcast on the 6-meter band.
- 2.radio frequency _
- 3.Landfill operators often monitor:
- 4.Why are broadcast communications systems usually deployed in lower frequency bands?
- 5.The famous writer and his works _______ the radio broadcast have aroused great interest among the students
- 6.This digital radio looks stylish, _____ it often fails to work.
- 7.An electromagnetic standing wave does not store electromagnetic energy.
- 8.Linkin Park is a _____ band.
- 9.broadcast
- 10.radiation
