You have altered a non-unique index to be invisible to determine if queries execute within an acceptable response time without using this index. Which two are possible if table updates are performed which affect the invisible index columns?（） [" The index remains invisible."," The index is not updated by the DML statements on the indexed table."," The index automatically becomes visible in order to have it updated by DML on the table."," The index becomes unusable but the table is updated by the DML."," The index is updated by the DML on the table."]
你是如何理解学校文化的？它有哪些功能？
Given: What is the result?（） ["[1, 2, 3, 5]","[2, 1, 3, 5]","[2, 5, 3, 1]","[5, 3, 2, 1]","[1, 3, 5, 2]","Compilation fails.","An exception is thrown at runtime."]
Given： 10. class One { 11. void foo（） { } 12. } 13. class Two extends One { 14. //insert method here 15. } Which three methods， inserted individually at line 14， will correctly complete class Two？（） [" public void foo（） { \/* more code here *\/ }"," private void foo（） { \/* more code here *\/ }"," protected void foo（） { \/* more code here *\/ }"," int foo（） { \/* more code here *\/ } "," void foo（） { \/* more code here *\/ }"]
多级离心泵的压头等于（），而流量等于（）。
客观性原则
