【单选题】
口令至少多长时间修改一次（）。___
A. 每一个月
B. 每二个月
C. 每三个月
D. 每六个月
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答案
C
解析
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【单选题】
从管理学角度看，所谓____是指管理者从系统整体利益出发，运用各种手段，正确妥善地处理系统之间、人们之间的各种关系，为实现系统目标而共同奋斗的一种管理职能。___
A. 沟通
B. 协调
C. 团队
D. 合作
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