Which is a supported method to upgrade firmware on an IBM Power Systems 570？（） Use the /usr/sbin/invscout AIX command.。 Use the ’Updates’ panel on the managing HMc。 Boot the 570 using an IBM-provided microcode Cd。 Use the /usr/lpp/diagnostics/bin/update_flash AIX command.。
You are maintaining your OLTP database in Oracle10g. You have not set the warning level and critical level threshold values for space usage of the DATA1 tablespace. What will be the impact？（） No warning level or critical level alert will be generated.。 A warning level alert will never be generated， but a critical level alert will be generated when 97 percent space of the DATA1 tablespace is used.。 A critical level alert will never be generated， but a warning level alert will be generated when 85 percent space of the DATA1 tablespace is used.。 A warning level alert will be generated at 85 percent space usage of the DATA1 tablespace， and a critical level alert is generated at 97 percent space usage of the DATA1 tablespace.。
【背景资料】郑州市某小区6号楼工程由某某建筑集团第一分公司承建。2008年11月20日主体结构及砌体全部施工完毕。至2008年11月粉刷施工队开始进场施工，到2009年5月25日大面积粉刷结束，在2009年4月份大检查时发现个别房间粉刷层空鼓但无裂缝，开始组织少量人员进行维修，到2009年5月20日再次大检查时发现大部分房间粉刷层空鼓并且墙面有很多裂纹，这时引起公司重视，开始组织专家到现场查勘并查找墙面粉刷层空鼓、裂缝的原因。
请根据背景资料完成以下选项。墙体抹灰砂浆采用的水泥宜采用（）。 硅酸盐水泥。 普遍硅酸盐水泥。 矿渣硅酸盐水泥。 复合硅酸盐水泥。
变压器采用从副边向原边折合算法的原则是（）。 保持副边电流I2不变。 保持副边电压为额定电压。 保持副边绕组漏阻抗不变。 保持副边磁通势不变。
Examine the structure of the EMPLOYEES and DEPARTMENTS tables: EMPLOYEESColumn name Data type Remarks EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2 (30) JOB_ID VARCHAR2 (20) SALARY NUMBER MGR_ID NUMBER References EMPLOYEE_ID COLUMN DEPARTMENT ID NUMBER Foreign key to DEPARTMENT ID column of the DEPARTMENTS table DEPARTMENTSColumn name Data type Remarks DEPARTMENT_ID NUMBER NOT NULL, Primary Key DEPARTMENT_NAME VARCHAR2(30) MGR_ID NUMBER References MGR_ID column of the EMPLOYEES table Evaluate this SQL statement: SELECT employee_id, e.department_id, department_name, salary FROM employees e, departments d WHERE e. department_id = d.department_id; Which SQL statement is equivalent to the above SQL statement? （） SELECT employee_id, department_id, department_name, salary FROM employees WHERE department_id IN (SELECT department_id FROM departments);。 SELECT employee_id, department_id, department_name, salary FROM employees NATURAL JOIN departments;。 SELECT employee_id, d.department_id, department_name, salary FROM employees e JOIN departments d ON e.department _ id = d. department_id;。 SELECT employee_id, department_id, department_name, Salary FROM employees JOIN departments USING (e.department_id, d.department_id)。
骨架隔墙安装过程中，门洞口框龙骨安装的紧后工作是（）。
