单项选择题 YouworkasanapplicationdeveloperatCertkiller.com.YouhavebeengiventhetaskofdevelopingaWindowsserviceapplicationthatregularlymonitorsotherWindowsservicesonthesamecomputer.ThisWindowsserviceapplicationmustalsologanyabnormalfilesystemactivity.YouhaveaddedthefollowingclasstotheWindowsserviceapplication：publicclassEnumerateService：ServiceBase{publicstaticEnumerateService（）{this.ServiceName="EnumerateService"；this.CanStop=true；}protectedoverridevoidOnStart（string[]args）{//EnumerateallservicesandinitializetheFileSystemWatcher}protectedoverridevoidOnStop（）{//StoptheFileSystemWatcherandperformcleanup}publicstaticvoidMain（）{EnumerateServiceservice=newEnumerateService（）；}}YouthencreatetheinstallerfortheWindowsserviceapplication，andinstalltheWindowsserviceapplication.YouhaveconfiguredtheWindowsserviceStartuptypetoAutomatic，andrebootedthesystem.YouthentestthenewWindowsserviceapplication，andfindthatitisnotworking.Youneedtoensurethattheserviceisworkingproperly.Whatshouldyoudo？（）

单项选择题 You work as an application developer at Certkiller .com. You have recently created a Windows service application and need to define a Windows service class. What should you do？（）

单项选择题 YouworkasanapplicationdeveloperatCertkiller.com.YouhavebeengiventheresponsibilityofcreatingaclassnamedCalcSalarythatwilldeterminethesalariesofCertkiller.com’sstaff.TheCalcSalaryclassincludesmethodstoincrementanddecrementstaffsalaries.ThefollowingcodeisincludedintheCalcSalaryclass：publicclassCalcSalary{//forpromotionspublicstaticboolIncrementSalary（EmployeeEmp，doubleAmount）{if（Emp.Status==QuarterlyReview.AboveGoals）Emp.Salary+=Amount；returntrue；}elsereturnfalse；}//fordemotionspublicstaticboolDecrementSalary（EmployeeEmp，doubleAmount）{if（Emp.Status==QuarterlyReview.AboveGoals）Emp.Salary-=Amount；returntrue；}elsereturnfalse；}}YouwouldliketoinvoketheIncrementSalaryandDecrementSalarymethodsdynamicallyatruntimefromthesalesmanagerapplication，anddecidetocreateadelegatenamedSalaryDelegatetoinvokethem.YouneedtoensurethatyouusetheappropriatecodetodeclaretheSalaryDelegatedelegate.Whatisthecorrectlineofcode？（）