香港刑法所规定的主要抗辩理由有哪些？
You are creating a form that will access an Oracle8 database. On which three sources can you base a data block?（） ["BFILE ","REF column ","Object table ","Column object ","INSTEAD-OF trigger"]
人民法院审理涉及家庭暴力的案件，可以根据公安机关（）等证据，认定家庭暴力事实。 ["出警记录","告诫书","伤情鉴定意见"]
施工机械的税费是指施工机械按照国家规定应缴纳的车船使用税、保险费及（）等。 ["过路过桥费","罚款","年通行费","年检费"]
You work as a database administrator at Certkiller .com. You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEEStable. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area. Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（） [" perform point-in-time recovery"," perform a Flashback Table operation to restore the table to the state it was in two days ago"," perform a Flashback Database operation to restore the database to the state it was in two days ago"," perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery"]
简述轴与孔的冷缩配合法。
