单项选择题
A.拨号有异 B.话机 C.用户板故障 D.网板故障
A.EXEGP B.EXEPP C.STSTP D.EXEDP
A.EXECUTED B.ORDERED C.SYNTAX FAULT D.UNREASONABLE VALUE
A.BLSLI B.DPSES C.DPPAI D.FCSLI
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