餐饮产品是有形产品和无形产品（食品、饮料等）和无形产品（（）、（）等）的有机结合体。
预防液化石油气中毒的主要措施是确保使用环境具有良好的（）设施。 密闭。 隔离。 通风。 检测。
TSM实现LAN-Free方式需要购买如下那个TSM 组件（） TSM for SAN。 TSM for Mail。 TSM for Database。
Application A is designed to execute the following SQL statements within a single Unit of Work (UOW). UPDATE employee SET salary = salary * 1.1 WHERE empno='000010' UPDATE department SET deptname = 'NEW dept' WHERE deptno='A00'Application B is designed to execute the following SQL statements within a single Unit of Work (UOW). UPDATE department SET deptname = 'OLD DEPT' WHERE deptno='A00' UPDATE employee SET salary = salary * 0.5 WHERE empno='000010' Application A and application B execute their first SQL statement at the same time. When application A and application B try to execute their second SQL statement, a deadlock occurs. What will happen?（） The database manager will rollback the transaction in both applications.。 The database manager will rollback the transaction in one of the two applications.。 Application B will successfully update the EMPLOYEE and DEPARTMENT tables; Application A will be placed in a lock wait state.。 Application A will successfully update the EMPLOYEE and DEPARTMENT tables; Application B will terminate when the lock timeout value is reached.。
当计算工期不能满足合同要求时，应首先压缩（）的持续时间。 持续时间最长的工作。 总时差最长的工作。 关键工作。 非关键工作。
An administrator is moving a volume group from one server to another. The disks will be physically moved between the two systems.
Which two operations are required on the volume group prior to the physical disk switch?（）
