皮皮学，免费搜题
登录
搜题
【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]public class CreditCardConfirmationService { [OperationContract] boolean ConfirmCreditCard(string ccNumber); double OrderAmount(int orderNumber);} You need to allow the code in the ConfirmCreditCard method to participate automatically in existing transactions.If there is no existing transaction, a new transaction must be created automatically. What should you do?（）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.
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】药品生产企业的验证项目包括（ ） A. 厂房设施；B.生产设备；C.生产工艺； D.组织机构； E.环境卫生；
A.
厂房设施；
B.
生产设备；
C.
生产工艺；
D.
组织机构；
E.
环境卫生；
【单选题】土壁支撑中横撑式支撑根据挡土板的不同分为( )和( )。
A.
水平挡土板和垂直挡土板
B.
水平挡土板和斜面挡土板
C.
斜面挡土板和垂直挡土板
D.
曲面挡土板和垂直挡土板