A.50MM B.80MM C.120MM D.100MM
A.傳真 B.尋呼機(jī)/電話 C.手機(jī)短信 D.Email
A.回放 B.分析數(shù)據(jù) C.數(shù)據(jù)合并 D.切換數(shù)據(jù)流