某校有学生8000人,随即抽查100人,其中有20人对学生管理有意见,则该校学生中对学校后勤管理有意见的人数的点估计值为()
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在早期现代化理论中,人们往往把“现代化”等同于“资本主义化”,但某一重大历史事件从理论上突破了这一认识。这一突破()
A. 是建立无产阶级专政的尝试
B. 以《共产党宣言》发表为标志
C. 使全世界无产者真正联合起来
D. 建立了世界上第一个社会主义国家
《特种设备质量监督与安全监察规定》,在用电梯的定期检验周期为()年。
A. 半
B. 1
C. 2
D. 3
固定资产的计价方法包括()
A. 折余价值
B. 重置完全价值
C. 净残值
D. 原始价值
You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 Enterprise Edition instance. There is a database named DB1 in the instance. A backup of DB1 is performed every day. You have to minimize the size of the full database backup files of DB1. In the options below, which Transact-SQL statement should you use? ()
A. BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak';
BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak' WITH COMPRESSION;
C. BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak' WITH DIFFERENTIAL;
D. BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak' WITH COMPRESSION,DIFFERENTIAL