- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
綜合布線三級(jí)結(jié)構(gòu)和網(wǎng)絡(luò)樹形三層結(jié)構(gòu)對(duì)應(yīng)關(guān)系是（）
A.CD對(duì)應(yīng)核心層，BD對(duì)應(yīng)匯聚層
B.BD對(duì)應(yīng)核心層，CD對(duì)應(yīng)匯聚層
C.BD對(duì)應(yīng)核心層，F(xiàn)D對(duì)應(yīng)接入層
D.CD對(duì)應(yīng)核心層，F(xiàn)D對(duì)應(yīng)匯聚層
