A.1 B.2 C.7 D.9
A.人工閉塞相應(yīng)的VC4 B.人工閉塞相應(yīng)的VC12 C.把MS2設(shè)置為L(zhǎng)OCKED狀態(tài) D.把MS1設(shè)置為L(zhǎng)OCKED狀態(tài)
A.東莞T2 B.東莞B2 C.東莞TR2 D.東莞A2