A.業(yè)務(wù)網(wǎng)B.基礎(chǔ)網(wǎng)C.數(shù)據(jù)專線網(wǎng)D.支撐網(wǎng)
A.基礎(chǔ)網(wǎng)B.業(yè)務(wù)網(wǎng)C.支撐網(wǎng)D.同步網(wǎng)
A.正比例關(guān)系B.反比例關(guān)系C.正對(duì)數(shù)曲線關(guān)系D.反對(duì)數(shù)曲線關(guān)系