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单选题 选择正确的选项()

A

A

B

B

C

C

D

D

多选题 You are developing an application that receives events asynchronously.You create a WqlEventQuery instance to specify the events and event conditions to which the application must respond.You also create a ManagementEventWatcher instance to subscribe to events matching the query.You need to identify the other actions you must perform before the application can receive events asynchronously.Which two actions should you perform?()

A

Start listening for events by calling the Start method of the ManagementEventWatcher.

B

Set up a listener for events by using the EventArrived event of the ManagementEventWatcher.

C

Use the WaitForNextEvent method of the ManagementEventWatcher to wait for the events.

D

Create an event handler class that has a method that receives an ObjectReadyEventArgs parameter.

E

Set up a listener for events by using the Stopped event of the ManagementEventWatcher.

多选题 Which methods allow COM components to be used in .NET applications?()

A

 Add a reference to the component throudh Microsoft Visual Studio 2005.

B

 Use the type Library Import tool (TlbImport.exe).

C

 Use the Regsvr32 tool.

D

 Ensure thet the application is registered, using the RegSvr tool if necessary. Then either add a reference to it from dialog box or use TblIpm.exe.

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