单项选择题 You work as an application developer at Certkiller .com. Certkiller .com wants you to develop an application that handles passes for Certkiller .com’s parking lot. The application has to store and retrieve vehicle information in a contiguous list that  allows for advanced navigation techniques.You have already written and executed the following code：  Vehicle v1， v2， v3， v4， v5；  v1 = new Vehicle （"1M2567871Y91234574"， "Nissan Silvia"， 1996）；  v2 = new Vehicle （"1H2569122493456960"， "Honda Civic"， 1999）；  v3 = new Vehicle （"1F2569106891234589"， "Mitsubishi Lancer"， 2001）；  v4 = new Vehicle （"1F7969122491234589"， "Mazda MX7"， 1998）；  v5 = new Vehicle （"1T2569122493456123"， "Toyota Supra"， 2000）；  LinkedList  vList = new LinkedList < Vehicle > （）；  LinkedListNode < Vehicle > vNode； vNode = vList.AddFirst （v1）；  vNode = vList.AddLast （v2）；  vNode = = vList.AddAfter （vNode， v3）；  vNode = = vList.AddAfter （vNode， v4）；  vList.AddLast （v5）；  foreach （Vehicle v in vList） {  Console.WriteLine （"{0} {1} （{2}）"，  v.MakeModel， v.Year， v.Vin）； }  What output will be produced in the console？（）

单项选择题 You work as an application developer at Certkiller .com. Certkiller .com wants you to develop an application that handles passes for Certkiller .com’s parking lot. The application has to store and retrieve vehicle information using a vehicle identification number （VIN）.You need to use the correct code to ensure type-safety. What should you do？（）

单项选择题 YouworkasanapplicationdeveloperatCertkiller.com.YouaredevelopinganapplicationthatmakesuseofaQueueclassobjectnamedMyQueue.ThisQueueclassobjectwillbeusedtostoremessagessentbytheuserduringapplicationruntime.Youwouldliketoaccessthemessageatthebeginningofthequeue，priortoprocessingtheusermessages，withoutremovingit.Whatshouldyoudo？（）