预制构件的混凝土强度等级不宜低于（）。 ["C20","C25","C30","C35"]
You work as an application developer at Certkiller .com. Certkiller .com has given you the task of creating medical billing application that will deal with various insurance vendors.The appropriate assemblies have to be loaded and unloaded dynamically based on the patient’s insurance provider. All of these insurance assemblies are located in C：\Insurance Assemblies. You have to ensure that when the new application first loads， it has to load allassemblies into a separate application domain. You need to create the child application domain and load all assemblies it using the correct code. What should you do？（） ["A","B","C","D"]
影响人的安全行为的环境因素有哪些？
精细动作是感官课程编制的核心。
You are working on a debug build of an application.You need to find the line of code that caused an exception to be thrown. Which property of the Exception class should you use to achieve this goal？（） ["Data","Message","Stack Trace","Source"]
如何有效地解决冲突？
