数字签名属于消息人认证方式。
什么是安全生产标准化？
You work as an application developer at Certkiller .com. You are currently in the process of developing a business logic component that requires long calculations. You have identified numerous tasks within this application that can be done asynchronously. You notice that these tasks are mutually dependent and require complex synchronization techniques so that it can manage efficiently. You decide to use Microsoft .NET 2.0 to take advantage of its new thread management features. You need to create and start the application threads. What should you do？（） ["A","B","C","D"]
简述成矿模式的概念、建立及其找矿意义？
文学中的“电影性”体现在现代小说文本中主要是（）的自觉运用。 ["母语","书面语","口语","标准语"]
在机组扩大性检修中，为什么要测定导叶间隙？导叶间隙的测定部位是哪里？
