A.雙代號(hào)網(wǎng)絡(luò)計(jì)劃中總持續(xù)時(shí)間最長(zhǎng)
B.雙代號(hào)時(shí)標(biāo)網(wǎng)絡(luò)計(jì)劃中沒(méi)有波形線(xiàn)
C.雙代號(hào)網(wǎng)絡(luò)計(jì)劃中由關(guān)鍵節(jié)點(diǎn)組成
D.單代號(hào)網(wǎng)絡(luò)計(jì)劃中相鄰關(guān)鍵工作時(shí)間間隔均為零　
E.單代號(hào)網(wǎng)絡(luò)計(jì)劃中由關(guān)鍵工作組成