题型:选择题 ---I called you yesterday, but no one answered.---I ______ my car when you called me.A.was washing,B.washedC.washing,D.am washing 查看答案
题型:单项选择题 E8C用户,在EPON用户故障诊断中显示“语音口1注册状态”UP,该UP表示什么意思()A.电话机插在E8C的语音口1B.平台已经向E8C设备下发了配置,并且语音业务正常C.用户正在通话D.用户有电话呼入 查看答案