A.信號繼電器勵磁網(wǎng)絡 B.人工取消解鎖網(wǎng)絡 C.正常解鎖網(wǎng)絡 D.終端繼電器勵磁網(wǎng)絡
A.0.5MΩ B.1MΩ C.1.5MΩ D.5MΩ
A.方向欄 B.進路欄 C.進路方式欄 D.敵對信號欄