为安全和监视专业人员开设的培训课程和继续教育计划课程对安全社区的会员是免费的。

Courses in the training and continuing education program for security and surveillance professionals are provided free of charge to members of the security community.

youdao

为安全和监视专业人员开设的培训课程和继续教育计划课程对安全社区的会员是免费的。

Courses in the training and continuing education program for security and surveillance professionals are provided free of charge to members of the security community.

youdao