写出完成下列功能的DOS命令，其中DOS的所有外部命令在C：\DOS目录下。删除当前目录下的子目录LEAT及其所包含的文件和下级所有子目录。
管道正常运行后应按日常检查或巡线检查，在安全附件方面，应重点检查（）。 ["操作压力","安全阀、爆破片、紧急切断装置、压力表、温度计等有无跑、冒、滴、漏情况","管道的保温是否完好","有无塑性变形"]
Which two options are benefits of the Cisco Technical Assistance Center?（） [" Increase the performance of the current features"," Possesses broad expertise in Cisco technologies"," Enhances network and\/or application availability, reliability and stability"," Provides rapid fault isolation in a complex environment, leading to quick resolutio"]
As a Cisco Network Engineer, you have to master the knowledge of the Cisco Storage Area Network solution for the data center. Which three of the following are features of it? （）(Choose three.) [" It provides multiprotocol support."," It allows you to create separate networks on the VSAN."," It allows you to migrate to new technologies without a complete equipment upgrade."," It reduces cost and complexity by providing an easy transition to evolving technologies."]
患者于某，76岁，气管切开术后2年，护士给予气管切开套管内套管更换及清洗，需要评估的内容是：（） ["患者的病情、意识、呼吸形态、痰液、血氧饱和度和合作程度","患者的气管切开伤口","气管套管的种类、型号","气囊压力","气管切开套管内套管有无破损及异物"]
写出完成下列功能的DOS命令，其中DOS的所有外部命令在C：\DOS目录下。在DOS下，更改当前日期为2001年5月10日。
