Which command will retrieve /unix and dump from the dump device？（） snap -R。 snap -D。 snap -U。 snap -N。
未取消辅修货车厂、段修时，三通阀质量保证期限为（）。 6个月。 1年。 1个辅修期。 1个段修期。
Two advantages the TS1130 Tape Drive has over LTO-5 drives are（）. speed and capacity。 drive reuse and media reuse 。 longer warranty and lower cost media 。 backward compatibility with LTO-4 cartridge。
You are a database developer. You plan to design a database solution byusing SQL Server 2008. You are creating adataba seto support the office manager. Your database model has the following structure. The database design has the following business requirements: An employee can be assigned more than one task. Upon completion, thetask is deleted. When a task is deleted, the associated assignment is deleted. When an employee is nolonger available tocomple tea task, theemployee link to the assignment is replaced with a NULL value. You need to implement the business requirements to maintain data integrity. What should you do?（） Create DDL INSERT triggers on the Employee. Task and Assignment entities.。 Create CHECK constraints on the Task ID and Employee ID attributes in the Assignment entity.。 Create Foreign Keys constraints on the Task ID and EmployeeID attributes in the Assignment entity. Reference the Task and Employee entities respectively. Specify the appropriate On Delete action.。 Create Foreign Keys constraints on the Task ID and Employee ID attributes in theTask and Employeeentities respectively. Reference the Assignment entity, and specify the appropriate On Delete action.。
参与示范
实行双重课税的组织形式为（）
