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【多选题】
Immediately after adding a new disk to or removing an existing disk from an ASM instance, you find that the performance of the database goes down initially until the time the addition or removal process is completed, and then gradually becomes normal. Which two activities would you perform to maintain a consistent performance of the database while adding or removing disks?（）A.
Define the POWER option while adding or removing the disks
B.
Increase the number of ARB processes by setting up a higher value for ASM_POWER_LIMIT.
C.
Increase the number of DBWR processes by setting up a higher value for DB_WRITER_PROCESSES
D.
Increase the number of slave database writer processes by setting up a higher value for DBWR_IO_SLAVES
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【简答题】Thanks very much.
【单选题】用静态法测定金属丝的 杨氏 模量时, D 为光杠杆到尺读望远镜的距离, b 为光杠杆的长度。为了提高光杠杆的放大倍数,在实验中我们可以( )。
A.
适当增大 D
B.
适当减小 b
C.
适当减小 D
D.
适当增大 b
【单选题】— Lisa, you look so tired. Shall I give you a ride? —Thanks very much. .
A.
It’s my pleasure
B.
It couldn’t be better
C.
Don’t mention it
D.
Do as you like