【单选题】You are integrating a Windows Communication Foundation (WCF) service within an enterprise-wide Service Oriented Architecture (SOA).Your service has the following service contract: [ServiceContract]pub...
A.
Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new TransactionScope()) block.
B.
Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new CommittableTransaction()) block.
C.
Add an [OperationBehavior(TransactionScopeRequired=true)] attribute to the ConfirmCreditCard method.
D.
Add an [OperationBehavior(TransactionAutoComplete=true)] attribute to the ConfirmCreditCard method.
【简答题】在一棵非空二叉树中,若度为0的结点的个数n,度为2的结点个数为m,则有n=________ (系统根据字符串匹配来判定答案,所以您的答案中请不要包含空格)For a binary tree with at least one node, if there are n nodes with degree 0 and m nodes with degree 2, then n = ________(T...