問答題
【簡(jiǎn)答題】在對(duì)敵對(duì)信號(hào)的檢查中,為什么D2信號(hào)機(jī)檢查的是KJ后接點(diǎn),而其它敵對(duì)信號(hào)檢查XJ后接點(diǎn)?
答案:
因?yàn)镈2防護(hù)的進(jìn)路與駝峰信號(hào)機(jī)防護(hù)的進(jìn)路時(shí)順向重疊的敵對(duì)進(jìn)路,當(dāng)D2已經(jīng)處于開放狀態(tài)時(shí),不允許駝峰信號(hào)開放,若駝峰信號(hào)先...