单项选择题
A.故障占用B.失去分路C.空闲D.正常占用
A.动车组拉通试验B.开通试验C.仿真试验D.现场试验
A.断开驱采电源(IOZ IOF)输出开关,测试接口架配线端无电压输入B.断开驱采电源(IOZ IOF)输出开关,测试接口架配线端电压+24VC.断开驱采电源(IOZ IOF)输出开关,测试接口架配线端电压-24VD.断开驱采电源(IOZ IOF)输出开关,测试接口架配线端电压+5V