根据图纸简述一下液压站叶轮锁定的工作过程
An application fails to start after a Technology Level upgrade. The application vendor recommends that two filesets upgraded as part of the new Technology Level be rejected. What is the recommended method for performing this task?（） ["Run instfix -u to reject the filesets.","Run installp -r to reject the filesets.","Run installp -u to uninstall the filesets.","Restore the system to previous state from the system backup."]
Excel表格中输入公式前，应该先输入（），输入“001”应该先输入（）
下列合同类型中，对于承包人来说承担的风险较大的是（）。 ["固定总价合同","固定单价合同","可调价格合同","成本加酬金合同"]
冲突论强调人们会因为有限的资源、权力和声望发生永恒的斗争，这是社会变迁的主要源泉。
班级授课制
