WG-21A型无绝缘轨道电路自动闭塞(“N+1”系统),接收器吸起门限( )。[312050203]

WG-21A型无绝缘轨道电路自动闭塞(“N+1”系统),接收器吸起门限( )。[312050203]

A.(A)205mV±8mV

B.(B)175mV±8mV

C.(C)160mV±6mV

D.(D)150mV±6mV

正确答案是A