（）是直接用来控制和管理多媒体硬件，并完成设备的各种操作。 多媒体应用软件。 多媒体开发工具。 多媒体操作系统。 多媒体驱动程序。
一个事务是一个（）的单位，它把必须同时执行或不执行的一组操作（）在一起。
Your network contains an Active Directory domain named contoso.com. The domain contains a server named Server1. The Active Directory Federation Services （AD FS） role is installed on Server1. Contoso.com is defined as an account store. A partner company has a Web-based application that uses AD FS authentication. The partner company plans to provide users from contoso.com access to the Web application. You need to configure AD FS on contoso.com to allow contoso.com users to be authenticated by the partner company. What should you create on Server1（） a new application。 a resource partner。 an account partner。 an organization claim。
股权众筹平台是指通过互联网平台为股权众筹投融资双方提供（）等相关服务的中介机构。 信息发布。 需求对接。 协助资金划转。 公平竞争。
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You add a ListBox control to the application. The ListBox control is data-bound to an instance of a custom collection class of the Product objects named ProductList. The number of items of the data-bound collection is fixed. However, users can modify the properties of each of the Product objects in the collection. You need to ensure that changes made on the Product objects are automatically reflected in the ListBox control. What should you do?（） Implement the INotifyPropertyChanged interface in the Product class.。 Implement the INotifyCollectionChanged interface in the ProductList class.。 Set the Mode property of the Binding object of the ListBox control to TwoWay.。 Set the UpdateSourceTrigger property of the Binding object of the ListBox control to PropertyChanged.。
铁合金炉煤气一氧化碳含量是（）%，所以极具危险性。
