【简答题】卧式车床的误差敏感方向为();刨床的误差敏感方向为()。
【单选题】在切削加工 过程中 ,原始误差的误差敏感方向与加工方法有密 切关系,那么牛头刨床的误差敏感方向 是( )
【单选题】管理的组织职能是指通过(),确定各成员的职责,并协调相互关系,将组织内部各个要素联结成一个有机整体,使组织成员协调统一行动去实现组织的共同目标。
【多选题】以下关于计划审计工作的说法中,不正确的有( )。
A.
计划审计工作包括初步业务活动和制定总体审计策略
B.
计划审计工作贯穿于整个审计过程的始终,是可以间断,不可以修正的过程
C.
不恰当的计划审计工作既影响审计工作效率,也影响审计目标的实现
【单选题】View the exhibit and examine the TRANS table's storage information. After a massive delete operation, you executed the following statement to shrink the TRANS table: SQL> ALTER TABLE trans SHRINK SPAC...
B.
The table and all related objects are compacted and the position of the high-water mark (HWM) for the table is adjusted
C.
The table and related indexes are compacted but the position of the high-water mark (HWM) for the table remains unchanged
D.
The unused space in the table is reclaimed and returned to the tablespace and the data manipulation language (DML) triggers on the table are fired during the shrinking process
【多选题】组织职权是指正式组织中组织赋予某一职位的权力,即管理者履行管理职能的职位权力,一般划分为( )。
【单选题】IP地址按逻辑层次分为_____类。( )
【单选题】按照IP地址的逻辑层次来分,IP地址可以分为5类,其中B类地址的第一个字节的范围是_______。
【简答题】刨床的误差敏感方向为( ) 方向; 卧式车床的误差敏感方向为 ( ) 方向 。 。
【单选题】Examine the structure of the EMP_DEPT_VU view: Column Name Type Remarks EMPLOYEE_ID NUMBER From the EMPLOYEES table EMP_NAME VARCHAR2(30) From the EMPLOYEES table JOB_ID VARCHAR2(20) From the EMPLOYEE...
A.
SELECT * FROM emp_dept_vu;
B.
SELECT department_id, SUM(salary) FROM emp_dept_vu GROUP BY department _ id;
C.
SELECT department_id, job_id, AVG(salary) FROM emp_dept_vu GROUP BY department _ id, job_id;
D.
SELECT job_id, SUM(salary) FROM emp_dept_vu WHERE department_id IN (10,20) GROUP BY job_id HAVING SUM (salary) > 20000
E.
None of the statements produce an error; all are valid.