A .186.2Hz
B .1960Hz
C .1520Hz
D .114.8Hz
[单选题]机车台呼叫调度的信令是()。A .186.2HzB .1960HzC .1520HzD .114.8Hz
[单选题]机车台同频呼叫机车台的信令是()。A .186.2HzB .131.8HzC .123HzD .114.8Hz
[单选题]地面台异频呼叫机车台的信令是()。A .186.2HzB .131.8HzC .114.8HzD .123Hz
[单选题]地面台同频呼叫机车台的信令是()。A .186.2HzB .131.8HzC .114.8HzD .123Hz
[单选题]机车台异频呼叫车站台的信令是()。A .186.2HzB .131.8HzC .123HzD .114.8Hz
[单选题]机车台同频呼叫车站台的信令是()。A .186.2HzB .131.8HzC .123HzD .114.8Hz
[单选题]车站台主呼机车台时,呼叫信令为()。A . 123.0HZB . 186.2HZC . 131.8HZD . 114.8HZ
[单选题]通用型机车台主呼隧道车站时,呼叫信令为()。A . 123.0HZB . 186.2HZC . 131.8HZD . 151.4HZ
[单选题]通用型机车台主呼平原车站时,呼叫信令为()。A . 123.0HZB . 186.2HZC . 457.825MHZD . 151.4HZ
[单选题]地面台同频呼叫地面台的信令是()。A .186.2HzB .131.8HzC .114.8HzD .123Hz