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单选题
How to show help file by press F1？（）
A
SetShowHelp
B
SetHelpString
C
SetHelpKeyword
D
SetHelpNavigator
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单选题An application writes to a log file in the /logs filesystem that is full. After the log file is deleted, 'df' still shows the filesystem as 100% full. What is the likely cause of the problem and what will resolve it?（）A
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