A.4 B.3 C.1 D.2
A.語(yǔ)音、互聯(lián)網(wǎng) B.語(yǔ)音、視頻 C.語(yǔ)音、數(shù)據(jù) D.視頻、數(shù)據(jù)
A.-120 B.-36 C.-110 D.-94