采用热装法装配轴承时,将轴承放入机油槽中加热,温度通常不超过()为宜。 200℃。 150℃。 100℃。 50℃。
Which data synchronization options between two geographical locations are supported by PowerHA SystemMirror?() Parallel and Serial。 Serial and Asynchronous。 Parallel and Synchronous。 Synchronous and Asynchronou。
监理人员要按规定采取()等形式,按作业程序即时跟班到位进行监督检查,对达不到质量要求的工程不得签字,并有权责令返工,有权向有关主管部门报告。 A.审批 。 B.调试 。 C.旁站 。 D.巡视 。 E.平行检验。
所有者权益
The EMP table contains these columns: LAST NAME VARCHAR2(25) SALARY NUMBER(6,2) DEPARTMENT_ID NUMBER(6) You need to display the employees who have not been assigned to any department. You write the SELECT statement: SELECT LAST_NAME, SALARY, DEPARTMENT_ID FROM EMP WHERE DEPARMENT_ID = NULL; What is true about this SQL statement? () The SQL statement displays the desired results.。 The column in the WHERE clause should be changed to display the desired results.。 The operator in the WHERE clause should be changed to display the desired results.。 The WHERE clause should be changed to use an outer join to display the desired results.。
南水北调工程政府管理机构由中央建设管理组织机构和()构成。