更多"[单选题]甚高频的频率范围是（）。"的相关试题:
[单选题]民航采用的甚高频通信频率范围是
A.108.00—112.00MHz
B.118.00—135.975MHz
C.112.00—118.00MHz
[单选题]
某甚高频电台工作频率范围是118MHz～136.975MHz，
该电台可提供25kHz频率间隔的信道总数是____。
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[多选题]鞍山机场甚高频使用频率为（ ）（ ）（ ）
A.118.55
B.130
C.121.5
[单选题]
甚高频频段的波长范围是
A. 10-lm
B. 100-1m
C. 100-l0cm
D. l0-lcm
[单选题]
甚高频地面系统包括甚高频收发信机部分和（）
A.信号传输部分、终端部分、监视遥控部分
B.信号传输部分、终端部分、控制面板
C.监视遥控部分、控制面板、内话部分
D.终端部分、控制面板、内话部分
[判断题]
国家空管局会指配给民用航空机场使用频率是甚高频、
特高频的移动无线电话台。
A.正确
B.错误
[单选题]
中国民航行业标准甚高频技术规范中规定民航甚高频
信道间隔应为（）
A. 12.5kHz
B. 25kHz
C. 8.33kHz
D. BC正确
[单选题]
中国民航行业标准甚高频技术规范中规定甚高频天线
的特性阻抗应为（）。
A. 50
B. 75
C. 60
D. 80
[单选题]
根据《中国民用航空无线电管理规定》，（）指配给
民用航空机场使用频率是甚高频、特高频的移动无线
电话台。
A.民航地区管理局
B.地方政府
C.国家无线电管理委员会
D.民航局无线电管理委员会
[单选题]
中国民航行业标准甚高频技术规范中规定甚高频天线
的极化方式应为（）。
A.水平极化
B.垂直极化
C.线极化
D.圆极化
[判断题]
中国民航行业标准甚高频技术规范中规定民航甚高频
收发转换时间应不大于20ms。
A.正确
B.错误
[单选题]
甚高频地空通信系统每个扇区频率设置没有以下哪
项？
A. 1个主用管制频率
B. 1个备用管制频率
C. 1个国际航空遇险和安全通信频率
D. 1个国际通用航空频率
[判断题]
甚高频地面系统包括甚高频收发信机部分和信号传输
部分、终端部分、监视遥控部分。
A.正确
B.错误
[单选题]
雷达管制扇区的主用管制频率，备用管制频率应由（）
个以上不同台址的甚高频台站提供服务
A. 1
B. 2
C. 3
D. 4
[判断题]
中国民航行业标准甚高频技术规范中规定民航甚高频
设备音频响应相对于1kHz，300Hz—3400Hz，变化应小
于6dB。
A.正确
B.错误
[单选题]
民航甚高频行业标准中甚高频低空语音通信地面设备
主要有四种用途；以下那个不属于（）。
A.对地面民航航空器实施机场地面滑行管制，场面管
制通信以及航空器在飞行的各阶段的空中交通管制。
B.对民航航空器实施运营管理服务的航空公司运行
控制。
C.对民用航空器提供全国飞行情报和航空气象信息
的报文通知
D.对各类民用航空器进行搜寻、援救、救生、和应急
情况下的特殊通信。
