什么是数据库？什么是数据库管理系统？数据库和传统文件的区别是什么？
拔缘是将板料边缘利用（）的方法进行弯曲加工。 ["折边和放边","放边和弯曲","收边和弯曲","放边和收边"]
You need to serialize an object of type List in a binary format. The object is named data. Which code segment should you use？（） ["A","B","C","D"]
You need to recommend a backup strategy for the servers in the San Francisco office. The strategy must meet the company's technical requirements What should you include in the recommendation？（） ["native-boot virtual hard disks （VHDs）","Microsoft System Center Data Protection Manager 2010","system restore points","Windows Server Backu"]
重轻罪
酶传感器有哪些类型
