进行保险经济活动所应具备的基本条件是（）。 ["大量同质风险的集合与分散","可保风险的存在","保险费率的厘定与保险基金的建立","保险合同的订立"]
Which two statements about Network Attached Storage are correct?（） [" Data is accessed using NFS or CIFS."," Data is accessed at the block level."," NAS is referred to as captive storage."," Storage devices can be shared between users."," A NAS implementation is not as fast as a DAS implementation."]
系统分析报告包含哪些内容？
支付人收到人民法院的止付通知后拒不停止止付的，（）。 ["判决后，支付人不再负有支付义务","法院可对其采取强制措施","判决后支付人仍需要承担支付义务","申请人可对支付人提起诉讼"]
简述流行性感冒的治疗原则。
工程寿命周期成本分析法的特点有哪些？
