Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables: EMPLOYEES EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE NEW_EMPLOYEES EMPLOYEE_ID NUMBER Primary Key NAME VARCHAR2 (60) Which DELETE statement is valid?（） [" DELETE FROM employees WHERE employee_id = (SELECT employee_id FROM employees);"," DELETE * FROM employees WHERE employee_id = (SELECT employee_id FROM new_ employees);"," DELETE FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE name = 'carrey');"," DELETE * FROM employees WHERE employee_id IN (SELECT employee_id FROM new_employees WHERE name = 'carrey')"]
按施工合同约定由双方提交的施工图纸应经监理机构审批后方可实施。
可不进行施工招标的情形有（）。 ["采购人依法能够自行建设的项目","需要采用不可替代的专利技术的项目","关系公众安全的项目","使用外国政府贷款的项目","需要向原中标人采购工程，否则将影响施工或者功能配套要求的项目"]
变压器的短路损耗主要为（）。 ["全部为铜耗","主要为铜耗","全部为铁耗","主要为铁耗"]
Which two statements are correct about database transportation?（） (Choose two.) [" The source and target platforms must be the same"," Redo logs, control files and temp files are also transported"," The transported database must have the same database identifier (DBID) as the source database and cannot be changed"," The COMPATIBLE parameter must be set to 10.0.0.0 or higher and the database must be opened in readonly mode before being transported"," Recovery Manager (RMAN) is used to convert the necessary data files of the database if the target platform is different and has different endian format"]
村民自治决策权
