2. 从业资格
  3. ( ) is the sending and receiving of th

( ) is the sending and receiving of th

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问题 ( )   is the sending and receiving of the messages by computer. It is a fast, low-cost way of communicating worldwide.A.LANB.Post officeC.E-MailD.Interface
选项 A.LAN
B.Post office
C.E-Mail
D.Interface
答案 C
解析
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