You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of two SQL Server 2008 instance. The two instances are respectively named InstanceA and InstanceB. There is a database named Dworks on InstanceA. You move the Dworks database to InstanceB. A user use a SQL Server login named Mary to access the database on InstanceA with the password "Tk@87#34". On InstanceB, you create the same SQL Server login. The user tries to use the SQL Server login Mark to access the Dworks database on InstanceB. But the user gets an error message, according to the indication of the message, the access to the Dworks database has been denied. You must make sure that the user can access the Dworks database on InstanceB successfully. So on InstanceB, which Transact-SQL statements should you execute?（） 正确。 错误。
从事医疗器械批发业务的经营企业应当销售给具有资质的经营企业或者使用单位。 正确。 错误。
You are developing a Windows Communication Foundation (WCF) service.One of the service operations contains the following code.private static int counter = 0;[OperationContract]public void IncrementCount(){ counter++;}You need to set a service behavior that prevents two or more threads from incrementing the counter variable at the same time. Which code segment should you use to set the service behavior?（） 正确。 错误。
下列险种属于特殊附加险的是（）。 正确。 错误。
BPR 正确。 错误。
医疗器械经营企业应当采取有效措施，确保医疗器械运输、贮存过程符合医疗器械说明书或者标签标示要求，并做好相应记录，保证医疗器械质量安全。
