如何针对林木病害进行林业技术防治？
Evaluate the SQL statement: 1 SELECT a.emp_name, a.sal, a.dept_id, b.maxsal 2 FROM employees a, 3 (SELECT dept_id, MAX(sal) maxsal 4. FROM employees 5 GROUP BY dept_id) b 6 WHERE a.dept_id = b.dept_id 7 AND a. asl < b. maxsal; What is the result of the statement? （） The statement produces an error at line 1.。 The statement produces an error at line 3.。 The statement produces an error at line 6.。 The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all departments that pay less salary then the maximum salary paid in the company.。 The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all employees who earn less than the maximum salary in their department.。
What is the primary use of the IBM Configuration & Options Guide （COG）？ （） IBM System x ServicePac part number look up。 Operating system and part number look up。 General server information and part number look up。 Software compatibility chart。
You execute the following command to audit the database activities： SQL> AUDIT DROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL； What is the effect of this command？（） One audit record is created for the whole session if user SCOTT successfully drops one or more tables in his session.。 One audit record is created for every session when any user successfully drops a table owned by SCOTT.。 One audit record is created for each successful DROP TABLE command executed by any user to drop tables owned by SCOTT.。 One audit record is generated for the session when SCOTT grants the DROP ANY TABLE privilege to other users in his session.。 One audit record is created for each successful DROP TABLE command executed in the session of SCOTT.。
当断路器三相分，合闸不同期超过标准时，对运行的危害是（）。 变压器合闸涌流增大。 断路器的合闸速度降低。 产生危害绝缘的操作过电压，并影响断路器切断故障的能力。
For NIM to install client machines located in a non-adjacent network， which routing must be defined？（）
