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【单选题】
患者,女,60岁,因食管癌入院手术治疗,身高1.75m,体重50kg,HR80次/分,R17次/分,既往吸烟40年,有家族史,平时喜食腌制食品。此病人出院后1个月又出现吞咽不畅,可能的原因是A.
反流性食管炎
B.
幽门梗阻
C.
肠梗阻
D.
吻合口狭窄
E.
吻合口溃疡
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【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】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。
A.
建立组织机构
B.
作出决策
C.
协商对话
D.
民主集中制
【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...
A.
An error is produced.
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
【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_______。
A.
1～126
B.
128～191
C.
192～223
D.
223～254
【简答题】误差敏感方向
【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.
【简答题】误差敏感方向
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