题目内容

一个长方形的长是m米,宽是n米,它的周长是()米。

A. 2m+n
B. 2m+2n
C. m+n

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You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. You have set the recovery model of DB1 to Full. At 2:00 There is a full database backup of all the user databases every day. Every quarter the transaction log backup is performed. Every 4 hours a differential backup is occurred. You are going to perform a full backup of DB1 at 11:00. When you perform this back up, you must make sure that the overall backup will not be affected. What';s more, you have to restore procedures for DB1. You must make sure that the backup files are restored in proper sequence. In the options below, which Transact-SQL statement should you use?()

A. BACKUP LOG DB1 TO DISK = 't:\backups\db1.trn';
BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak' WITH DIFFERENTIAL;
C. BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak' WITH NOUNLOAD;
D. BACKUP DATABASE DB1 TO DISK = 't:\backups\db1.bak' WITH COPY_ONLY;&e

2004年11月30日,北京市发展和改革委员会在京召开“关于调整世界文化遗产游览参观点门票价格听证会”后,北京故宫、天坛、颐和园、八达岭长城、定陵、长陵等景点门票纷纷涨价。随后全国不少景点跟着涨价,另一些景点也在酝酿涨价。然而面对2005年“五一”黄金周的到来,不少拟涨价的景点还是推迟了实施日期。与此种情况相反,杭州则于2003年4月将没有围墙、不收门票的西湖还给了广大市民和游客。同年的国际博物馆日,杭州市园林文物局所属的六大博物馆、纪念馆又一次实行免票游览。自此,“免费西湖”成为杭州市旅游惯例。针对免费是否导致亏损的问题,杭州市旅游委员会的关人士指出,按照市政府预先所做的“大旅游”的设想,免费非但没有造成亏损,反而因为游客增加,相关产业获得的盈利比免费前还要多。一些拟涨价的景点在“五一”黄金周前推迟涨价的决策在某种程度上体现了景点有关方面对旅游()规律的认识。

A. 需求
B. 供给
C. 开发
D. 收入
E. 增长

旅游业是()的重要提供者。

下面哪些是Flash新增的功能?()

A. 可以导入mp3格式的声音文件。
B. 可以导入视频格式。
C. 增加了层文件夹。
D. 可以把声音设置成流方式。

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