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【单选题】
While an electrician was adding additional circuits for the Data Center， the system running the Database inadvertently powered down. The fallover of the service IP labels and volume groups to the hot standby node completed as expected； however， the database did not start. The database log file indicated that the database was already started. What is the most likely cause of this problem？（）A.
The shared logical volumes and filesystems did not have database permissions.
B.
There was a test instance running on the standby system that must be shutdown.
C.
The tablespaces had an indicator indicating that the database had not shutdown properly.
D.
The startup script for the highly available instance did not first perform cleanup operations.
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举一反三
【单选题】Which paragraph(s) show(s) us the meaning and origin of an expression that describe a hard-working person?
A.
A B
B.
CD
C.
ABC
D.
ABCD
【单选题】第5题:在原子吸收分析中, 如怀疑存在化学干扰,例如采取下列一些补救措施,指出哪种措施是不适当的( )
A.
加入释放剂
B.
加入保护剂
C.
提高火焰温度
D.
改变光谱通带
【单选题】Truly speaking, people both at home and abroad would describe someone to bring us bad luck as a ______ person in English.
A.
“Jinx”
B.
“Snobby”
C.
“Stingy”
D.
“Generous”
【简答题】We often read in novels how a seemingly respectable person or family has some terrible secret which has been concealed from strangers for years. English language possesses a vivid saying to【M1】______ ...
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