A.D3能開(kāi)放,D9不能開(kāi)放 B.D3不能開(kāi)放,D9能開(kāi)放 C.D3不能開(kāi)放,D9不能開(kāi)放 D.D3能開(kāi)放,D9能開(kāi)放
A.選路→排路→開(kāi)放信號(hào)→鎖閉進(jìn)路 B.排路→選路→開(kāi)放信號(hào)→鎖閉進(jìn)路 C.選路→開(kāi)放信號(hào)→排路→鎖閉進(jìn)路 D.選路→排路→鎖閉進(jìn)路→開(kāi)放信號(hào)
A.D3ZJ↑→D7FKJ↑→D9ZJ↑→D17FKJ↑ B.D3ZJ↑→D9ZJ↑→D7FKJ↑→D17FKJ↑ C.D3ZJ↑→D9ZJ↑→D17FKJ↑→D7FKJ↑ D.D17FKJ↑→D9ZJ↑→D7FKJ↑→D3ZJ↑