Which statement is true about Oracle Net Listener?（） [" It acts as the listening endpoint for the Oracle database instance for all local and non-local user connections."," A single listener can service only one database instance and multiple remote client connections."," Service registration with the listener is performed by the process monitor (PMON) process of each database instance."," The listener.ora configuration file must be configured with one or more listening protocol addresses to allow remote users to connect to a database instance."]
组织开展家庭美德和反家庭暴力宣传教育的是（）。 ["法院","妇女联合会","共产主义青年团","工会"]
During the implement phase， systems acceptance testing provides which two of the following services for the customer（） ["It installs， configures， and verifies monitoring tools and processes in accordance with the operations implementation.","It verifies that the Cisco Unified Communications solutions is ready for production.","It verifies that the Cisco Unified Communications solution meets their business and technical requirements.","It executes and verifies the migration plan by migrating network services from an existing state to a future state.","It provides automated tools for measuring system performance under load."]
卤代烷灭火剂可用于扑救（） ["可燃固体表面火灾","活泼金属火灾","可燃气体火灾"]
Click the Exhibit button to examine the structures of the EMPLOYEES and TAX tables. You need to find the percentage tax applicable for each employee. Which SQL statement would you use?（） ["SELECT employee_id, salary, tax_percent FROM employees e JOIN tax t ON e.salary BETWEEN t.min_salary AND t.max_salary;","SELECT employee_id, salary, tax_percent FROM employees e JOIN tax t WHERE e.salary > t.min_salary AND < t.max_salary;","SELECT employee_id, salary, tax_percent FROM employees e JOIN tax t ON (MIN(e.salary) = t.min_salary AND MAX(e.salary) = t.max_salary);","You cannot find the information because there is no common column between the two tables."]
仪表刻度盘的符号及意义MvAr（），vAr（）。
