How many operators are needed/required on board according to the provisions of the International Convention for the Safety of Life at Sea,1974?().
Server Operators组成员可以()。
在Windows2000的下列群组中,不论文件的权限设置为何,都对文件具有数据备份与还原权利的是()。 a.administrators b.Backup operators c.Guests d.Powe rUsers e.Replicator