It is now possible for a business to operate effectively without an office, because the employees can conduct all communications

admin2011-02-15  50

问题 It is now possible for a business to operate effectively without an office, because the employees can conduct all communications via (    ).

选项 A、 phone
B、 voice mail
C、 fax
D、 e-mail

答案A,B,C,D

解析
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