[多选] 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 Web page includes the HTML shown in the following code segment.  You need to write a JavaScript function that will dynamically format in boldface all of the hyperlinks in the ref span.Which code segment should you use？（） $（"#ref"）.filter（"a[href]"）.bold（）；。 $（"ref"）.filter（"a"）.css（"bold"）；。 $（"a"）.css（{fontWeight："bold"}）；。 $（"#ref a[href]"）.css（{fontWeight："bold"}）；。 造成直流电动机转速太低或不均匀地转动的原因有哪些？ 江南地区种植屋面，一般不设（）。 A.保温层 。 B.排水层 。 C.找平层 。 D.防水层。 继发性人格异常 Windows Communication Foundation (WCF) service will be hosted in Microsoft Internet Information Services (IIS).You create a new application in IIS to host this service and copy the service DLL to the bin directory of the application.You need to complete the deployment of this service to IIS. What should you do next?（） Create an asmx file and add a @ServiceHost directive to this file. Copy the file to the root of the application directory.。 Create an .asmx file and add a @Register directive to this file. Copy the file to the bin directoyy of the application.。 Create a svc file and add a @ServiceHost directive to this file. Copy the file to the root of the application directory.。 Create a .svc file and add a @Register directive to this file. Copy the file to the bin directory of the application.。 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？（）