Which two statements complete a transaction? （） [" DELETE employees;"," DESCRIBE employees;"," ROLLBACK TO SAVE POINT C;"," GRANT SELECT ON employees TO SCOTH"," ALTER TABLE employees SET UNUSED COLUMN sal;"," Select MAX(sal) FROM employees WHERE department _ id 20"]
水利水电工程验收分为（）。 ["分部工程验收","阶段验收","单元验收","单位工程验收","竣工验收"]
Given: And MainClass exists in the /apps/com/company/application directory. Assume the CLASSPATH environment variable is set to "." (current directory). Which two java commands entered at the command line will run MainClass?（） ["java MainClass if run from the \/apps directory","java com.company.application.MainClass if run from the \/apps directory","java -classpath \/apps com.company.application.MainClass if run from any directory","java -classpath . MainClass if run from the \/apps\/com\/company\/application directory","java -classpath \/apps\/com\/company\/application:. MainClass if run from the \/apps directory","java com.company.application.MainClass if run from the \/apps\/com\/company\/application directory"]
Given the following RMAN commands，choose the option that reflects the order required to restore your currently operational ARCHIVELOG-mode database.（） a. restore database b. recover database c. shutdown immediate d. startup e. restore archivelog all f. alter database open [" a， b， c， d， e， f"," c， b， a， d， e， f"," c， b， a， d， f"," c， a， b， d"," c， a， e， b， d， f"]
高层普通住宅楼的电梯和楼道照明用电，应属于（）级负荷。
人的社会化与个性形成有何关系？
