单选题While performing monitoring and tuning the database， you want to view the summarized information about the warning level alerts and critical level alerts. Which section of the Oracle Enterprise manager displays the summarized information about the warning and critical level alerts？（）AGeneralB High AvailabilityC Space UsageD Diagnostic Summary
单选题
While performing monitoring and tuning the database， you want to view the summarized information about the warning level alerts and critical level alerts. Which section of the Oracle Enterprise manager displays the summarized information about the warning and critical level alerts？（）
A
General
B
High Availability
C
Space Usage
D
Diagnostic Summary
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解析：
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