A.材料選項(xiàng) B.文件選項(xiàng) C.交通運(yùn)輸安全選項(xiàng) D.環(huán)境選項(xiàng)
A.202.103.229.38 B.192.168.1.1 C.221.221.256.9 D.59.64.183.22
A.幁中繼 B.ATM網(wǎng)絡(luò) C.分組交換 D.數(shù)字?jǐn)?shù)據(jù)網(wǎng)