国家电网公司对风电场电压控制的要求是什么？
When performing a database duplication， which duplicate database parameter would you set to ensure that the online redo logs are created in the correct location？（） [" log_file_name_convert"," convert_log_file_name"," file_name_convert_log"," redo_log_file_name_convert"," logfile_convert_directory"]
Which two statements are true about Shared SQL Area and Private SQL Areas（） ["Shared SQL Area will be allocated in the shared pool.","Shared SQL Area will be allocated when a session starts.","Shared SQL Area will be allocated in the large pool always.","The whole of Private SQL Area will be allocated in the Program Global Area （PGA） always.","Shared SQL Area and Private SQL Area will be allocated in the PGA or large pool.","The number of Private SQL Area allocations is dependent on the OPEN_CURSORS parameter."]
Your database is functional with peak load for one hour. You want to preserve the performance statistics collected during this period so that they can be used for comparison while analyzing the performance of the database in the future. What action would you take to achieve this task？（） ["Set the STATISTICS_LEVEL initialization parameter to ALL.","Create a baseline on a pair of snapshots that have the statistics of the peakload period in the database.","Decrease the snapshot interval in the AWR to collect more number of snapshots during the peakload period.","Set the snapshot retention period in the Automatic Workload Repository （AWR） to zero to avoid theautomatic purging of the snapshots."]
现场临时用电系统没有按照“TN-S”系统进行设计和实施容易导致（）事故的发生。 ["触电","物体打击","高空坠落","坍塌"]
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