You are using flat files as the data source for one of your data warehousing applications. To optimize the application performance， you plan to move the data from the flat files to clustered tables in an Oracle database.While migrating the data， you want to have minimal impact on the database performance and optimize the dataload operation. Which method would you use to load data into the Oracle database（） ["Use the external table population.","Use the Oracle Data Pump export and import utility.","Use the conventional path data load of the SQL*Loader utility.","Use the INSERT INTO...SELECT command to load the data"]
Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE Which INSERT statement is valid? （） [" INSERT INTO employees (employee_id, first_name, last_name, hire_date) VALUES (1000, 'John', 'smith','01\/01\/01);"," INSERT INTO employees(employee_id, first_name, last_name, hire_date) VALUES (1000, 'John', 'smith','01 january 01');"," INSERT INTO employees(employee_id, first_name, last_name, Hire_date) VALUES (1000, 'John', 'smith', To_ date ('01\/01\/01));"," INSERT INTO employees(employee_id, first_name, last_name, hire_date) VALUES (1000, 'John', 'smith','01-Jan-01')"]
主阀大膜板活塞上方通列车管压力，下方通（）压力。 ["降压风缸","工作风缸","均衡风缸","紧急风缸"]
某男性患者，30岁，胸腹背部大面积烧伤8h。查体：BP68/sommHg，P121/min，cvp2.5mmH20，尿量15ml/h，诊断为烧伤并发休克。该患者的休克，属于（） ["感染性休克","失血性休克","创伤性休克","失液性休克","心源性休克"]
Given: What is the result?（） ["test","Exception","Compilation fails.","NullPointerExceptio"]
偏航系统作用是什么？
