A.通過(guò)電路交換公用數(shù)據(jù)網(wǎng) B.通過(guò)計(jì)算機(jī)互聯(lián)網(wǎng) C.通過(guò)分組交換公用數(shù)據(jù)網(wǎng) D.通過(guò)綜合業(yè)務(wù)數(shù)字網(wǎng)
A.on B.around C.in D.with
A.控制分系統(tǒng) B.電源分系統(tǒng) C.溫控分系統(tǒng) D.遙測(cè)指令分系統(tǒng)