debug时output窗口输出信息的疑问

Question

A first chance exception of type 'System.Net.WebException' occurred in System.dll
'CollectService.vshost.exe' (Managed): Loaded 'Component.ExtractRegionSetting.ExtractRegionSetting.IActivity6Result.DictionaryAdapter6.Activity6'
'CollectService.vshost.exe' (Managed): Loaded 'Component.ExtractRegionSetting.ExtractRegionSetting.IActivity6Result.DictionaryAdapter6.Activity6'
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
'CollectService.vshost.exe' (Managed): Loaded 'Component.RegexExtractRule.RegexExtractRule.IActivity7Result.DictionaryAdapter6.Activity7'
'CollectService.vshost.exe' (Managed): Loaded 'Component.RegexExtractRule.RegexExtractRule.IActivity7Result.DictionaryAdapter6.Activity7'
'CollectService.vshost.exe' (Managed): Loaded 'D:\wwwroot\OICF\eHunter\CollectService\bin\Debug\OICF.RegexHelper.dll'
'CollectService.vshost.exe' (Managed): Loaded 'Component.Store2Xml.Store2Xml.IActivity8Result.DictionaryAdapter6.Activity8'
'CollectService.vshost.exe' (Managed): Loaded 'Component.Store2Xml.Store2Xml.IActivity8Result.DictionaryAdapter6.Activity8'
'CollectService.vshost.exe' (Managed): Loaded 'Component.ExtractRegionSetting.ExtractRegionSetting.IActivity6Result.DictionaryAdapter6.Activity66'
'CollectService.vshost.exe' (Managed): Loaded 'Component.ExtractRegionSetting.ExtractRegionSetting.IActivity6Result.DictionaryAdapter6.Activity66'
'CollectService.vshost.exe' (Managed): Loaded 'Component.RegexExtractRule.RegexExtractRule.IActivity7Result.DictionaryAdapter6.Activity77'
'CollectService.vshost.exe' (Managed): Loaded 'Component.RegexExtractRule.RegexExtractRule.IActivity7Result.DictionaryAdapter6.Activity77'

可以看到，好多信息都是重复载入两遍，这个是怎么回事啊