A.交接箱到分線盒 B.配線架到交接箱 C.局用交換機(jī)到配線架
A.可以重復(fù)統(tǒng)計(jì) B.不重復(fù)統(tǒng)計(jì) C.取平均值統(tǒng)計(jì)
A.出局用戶電纜對(duì)數(shù) B.局間中繼用線對(duì)數(shù) C.長(zhǎng)途中繼用線對(duì)數(shù)