A.=SUM(B1:B3) B.=SUM(B1:B3)/B3 C.=AVERAGE(B1:B3) D.=AVERAGE(B1:B3)/3
A.數(shù)字化音頻的采樣和量化 B.數(shù)字音頻信號(hào)轉(zhuǎn)化為模擬音頻信號(hào) C.數(shù)字信號(hào)編碼 D.模擬信號(hào)量化
A.城域網(wǎng) B.局域網(wǎng) C.廣域網(wǎng) D.星型網(wǎng)