《钢轨探伤管理规则》中,对探伤仪的状态质量考评,包括季检、年检的合格率、优良率。
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不良信息发布传播者为获得巨大的经济利益,铤而走险传播不良信息是互联网不良信息泛滥的重要因素之一。
A. 正确
B. 错误
北朝承继()十六国,为胡汉融合的新兴朝代。北魏深受五胡文化影响,皇室多为()族。
You are creating a Windows Forms application by using the .NET Framework 3.5. You plan to develop a new control for the application.The control will have the same properties as a TextBox control.You need to ensure that the control has a transparent background when it is painted on form.You want to achieve this goal by using the minimum amount of development effort.What should you do?()
A. Create a new class that is derived from the Control class.Call the SetStyle method in the constructor.
B. Create a new class that is derived from theTextBox control class.Override the OnPaint method in the constructor.
Create a new class that is derived from the Control class.Set the BackColor property of the control to Transparent.Call the SetStyle method in the constructor.
D. Create a new class that is derived from theTextBox control class.Set the BackColor property of the control to Transparent in the constructor.Call the SetStyle method in the constructor.