You are creating an application that consumes a Windows Communication Foundation (WCF) service. The service implements the IService contract. The client application contains the CallbackHandler class, which implements IServiceCallback.You need to ensure t
题目
You are creating an application that consumes a Windows Communication Foundation (WCF) service. The service implements the IService contract. The client application contains the CallbackHandler class, which implements IServiceCallback.You need to ensure that a client proxy is created that can communicate with the service over a duplex channel.Which code segment should you use?（）
A.
B.
C.
D.
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更多“You are creating an application that consumes a Windows Communication Foundation (WCF) ser ”相关问题
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第1题：
What are four capabilities of the mysql client program?()A.Creating, dropping, and modifying tables and indexes
B.Initiating a binary backup of the database by using the START BACKUP command
C.Displaying replication status information
D.Shutting down the server by using the SHUTDOWN command
E.Creating and dropping databases
F.Creating and administering users
参考答案：A, C, E, F
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第2题：
五肽用二硝基氟苯(DNFB)分析，可得DNF-Ser，用胰蛋白酶水解得出三肽，其N端为Cys，而C端为Ala，那么该肽是
A、Ser-Lys-Cys-Phe-Ala
B、Ala-Phe-Cys-Lys-Ser
C、Ser-Cys-Lys-Phe-Ala
D、Phe-Ala-Ser-Cys-Lys
E、Lys-Cys-Phe-Ala-Ser
参考答案：D
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第3题：
已知在某Windows应用程序中，主窗体类为Form1，程序入口为静态方法From1.Main。如下所示： public class Form1 : System.Windows.Forms.Form { //其他代码 static void Main（) { //在此添加合适代码 } } 则在Main方法中打开主窗体的正确代码是（)。
A．Application.Open(new Form1());
B．Application.Run(new Form1());
C．(new Form1()).Open();
D．(new Form1()).Run();
A -
第4题：
五肽用二硝基氟苯(DNFB)分析,可得DNF－Ser,用胰蛋白酶水解得出三肽,其N端为Cys,而C端为Ala,那么该肽是A、Ser-Lys-Cys-Phe-Ala
B、Ala-Phe-Cys-Lys-Ser
C、Ser-Cys-Lys-Phe-Ala
D、Phe-Ala-Ser-Cys-Lys
E、Lys-Cys-Phe-Ala-Ser
参考答案：D
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第5题：
I don′ t care about the good salary offered by the company. What I need is a(n) _____________ post.A.awarding
B.challenging
C.competing
D.creating答案：B解析：考查形容词辨析。句意为“我不在乎公司所提供的高薪。我需要的是一份有挑战性的工作”。awarding是动词award的现在分词，表示“授予”；challenging是动词challenge的现在分词，表示“挑战性的；有吸引力的”；competing是动词compete的现在分词，表示“竞争的；抵触的；相互矛盾的”；creating是动词 create的现在分词，表示“创造”。根据旬意。选B。 -
第6题：
下列属于核苷酸水平的回复突变的是（）。
A．AGC (Ser) ® ACC (Thr) ®AGC (Ser)
B．AGC (Ser) ® AGG (Arg) ®AGT (Ser)
C．AGC (Ser) ® ACC (Thr) ®CCC (Ala)
D．AGC (Ser) ® ACC (Thr) ®GAA (Glu)
AGC (Ser) ® ACC (Thr) ® AGC (Ser)