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【多选题】
You work as a database administrator for Certkiller .com. Your database is opened in NOARCHIVEKLOG mode. You decide to place the database in ARCHIVELOG mode. How would you do this？（）A.
Execute the ALTER DATABASE ARCHIVELOG statement
B.
Select ARCHIVELOG option in the database control and restart the database to apply the changes.
C.
Shut down and start the instance, and in the NOMOUNT state execute the ALTER DATABASE ARCHIVELOG statement.
D.
Shut down and start the instance, mount the database, then execute the ALTER DATABASE ARCHIVELOG statement.
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反馈参考答案：
举一反三
【简答题】小红4分钟写了80道题，小丽5分钟写了90道题，谁写的快些？
【多选题】According to the requirements of Coal Mine Safety Regulations, five disasters in coal mine, they are mine fire, coal mine water, ( )
A.
coal mine gas
B.
coal dust
C.
roof-fall
D.
electric shock
【单选题】The English “first-footer” should be carrying coal, money, or bread, symbolizing _____.
A.
health
B.
good natured
C.
bad luck
D.
wealth
【单选题】______is burned in coal boilers to ignite the coal burners,to warm up the boiler and raise pressure before coal is adimitted. A Coal B Gas C Water D Oil
A.
Coal
B.
Gas
C.
Water
D.
Oil
【简答题】（1）IP地址分层的原因是( )。
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