凹槽配合的凸缘式联轴器在装拆时,凸缘半联轴器必须作()后,转子方可作径向位移。
You want to create a consumer group, GROUP1, and you execute the following command in the command-line interface: SQL> EXEC DBMS_RESOURCE_MANAGER.CREATE_CONSUMER_GROUP (CONSUMER_GROUP =>’group1’, COMMENT => ’New Group’); This command errors out displaying the following message: ERROR at line 1: ORA-29371: pending area is not active ORA-06512: at "SYS.DBMS_RMIN", line 115 ORA-06512: at "SYS.DBMS_RESOURCE_MANAGER", line 108 ORA-06512: at line 1 What action would you take to overcome this error?() activate the Pending Area before creating the consumer group。 create the Pending Area before creating the consumer group。 increase the size of the database buffer cache to accommodate the Pending Area。 increase the size of the shared pool to accommodate the Pending Area。 increase the size of the large pool to accommodate the Pending Area。
电流互感器的不完全星形接线,在运行中() 不能反应所有的接地故障。 对相间故障反应不灵敏。 对反应单相接地故障灵敏。
油田上油水井井位的部置称为() 开发方式。 开发层系。 开发井网。
油断路在运行中的检查项目有哪些?
软组织化脓性感染,下列哪一种有接触性传染,应隔离()