《规则》对船舶、排筏在没有具体规定停泊范围尺度的水域停泊的要求是:()。
A. 没有要求,可以任意锚泊
B. 要尽量靠边或使用航道外水域
C. A和B均对
D. A和B均错
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()是指围绕某一主题或某一问题,多层面、多层次、有计划地连续播出的拓展式报道形式。
新安装或一、二次回路有变动的变压器差动保护,当被保护的变压器充电时应将差动保护()
A. 投入;
B. 退出;
C. 投人退出均可;
D. 视变压器情况而定。
You use Microsoft Visual Studio 2010 and Microsoft . NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You create a WPF window in the application. You add the following code segment to the application. public class ViewModel { public CollectionView Data { get; set; } } public class BusinessObject { public string Name { get; set; } } The DataContext property of the window is set to an instance of the ViewModel class. The Data property of the ViewModel instance is initialized with a collection of BusinessObject objects. You add a TextBox control to the Window. You need to bind the Text property of the TextBox control to the Name property of the current item of the CollectionView of the DataContext object. You also need to ensure that when a binding error occurs, the Text property of the TextBox control is set to N/A . Which binding expression should you use?()
A. { Binding Path=Data/Name, FallbackValue='N/A' }
B. { Binding Path=Data.Name, FallbackValue='N/A' }
C. { Binding Path=Data/Name, TargetNullValue='N/A' }
D. { Binding Path=Data.Name, TargetNullValue='N/A' }
In a combination chain and wire rope mooring system,the anchor chain is deployed at the anchor end of the line to().
A. increase fatigue life of the system
B. reduce the time to retrieve the line
C. increase the holding power
D. reduce the catenary