單項(xiàng)選擇題
“八五”期間全國(guó)開(kāi)始建設(shè)公用數(shù)據(jù)通信網(wǎng),現(xiàn)已覆蓋3000個(gè)城市,該數(shù)據(jù)通信網(wǎng)包括中國(guó)公用分組交換網(wǎng)(CHINAPAC)、中國(guó)公用數(shù)字?jǐn)?shù)據(jù)網(wǎng)(CHINADDN),和()。
A.中國(guó)公用計(jì)算機(jī)互聯(lián)網(wǎng)(CHINANET)
B.中國(guó)經(jīng)濟(jì)信息網(wǎng)(CEINET)
C.國(guó)家經(jīng)濟(jì)信息網(wǎng)(CHINAINFO)
D.中國(guó)學(xué)術(shù)網(wǎng)(CANET)