1台局部通风机不得同时向2个作业的掘进工作面供风。（√掘进机必须装有前照明灯，但有时可不要尾灯。（）
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高浓度（）对眼睛有强刺激性，可引起疼痛和烧伤，导致明显的炎症并可能发生水肿、上皮组织破坏、角膜混浊和虹膜发炎。
You are developing an ASP.NET application by using Visual Studio 2010. You need to interactively debug the entire application. Which two actions should you perform？ （）
A. Set the Debug attribute of the compilation node of the web.config file to true.
B. Add a DebuggerDisplay attribute to the code-behind file of the page that you want to debug.
C. Select the ASNET debugger option in the project properties.
Define the DEBUG constant in the project settings.
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