Rather than producing time-intensive and costly physical copies for each employee, a central server or email list can () an efficient method for distributing necessary information.
A. keep as
B. serve as
C. regard as
D.refer as
正确答案是B
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。