对已设置运营人员代号的验印经办人员要定期更改密码，期限为（）_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

对已设置运营人员代号的验印经办人员要定期更改密码，期限为（）.

A.一个月

B.三个月

C.六个月

D.二个月

答案

参考答案：A

选择题

A lot of new technology _____ into schools to make learning more effective these years. [ ]

A. introduced

B. has introduced

C. was introduced

D. is being introduced

单项选择题

因合法建造、拆除房屋等事实行为设立或消灭物权的，物权自（）时发生效力。

A.交付

B.法律行为生效

C.事实行为成就

D.当事人申请