在环境保护方面，要求建筑物拆除产生的废弃物的再利用和回收率大于（）。 20%。 30%。 40%。 50%。
定期保管会计档案的期限有（）。 3年。 5年。 10年。 15年。
胚胎移植
无限责任公司
Your network contains a file server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). Server 1 is configured as shown in the following table. You need to modify permissions to meet the following requirements: ·Enable all users to read all files in the Userdata share. ·Enable members of the Sales group to create, modify, and delete files and folders in the Sales folder. What should you do?（） Assign the Sales group the Modify permission for the Sales folder.。 Assign the Sales group the Full Control permission for the Userdata share.。 Assign Authenticated Users the Read permission for the Userdata share. Assign the Sales group the Full Control permission for the Sales folder.。 Assign the Sales group the Change permission for the Userdata share. Assign Authenticated Users the Read permission for the Userdata share.。
自行回避情形有（）
