一旦受试者自愿参加人体试验后就不能从试验中退出。
受试者接受试验，应自愿承担一定风险。
多品种生产的情况下，影响可比产品成本降低额变动的因素有（）。 ["产品产量","产品单位成本","产品价格","产品品种结构","产品质量"]
Cisco IDS sensors form the eyes and ears of your Cisco network intrusion detection system.Placing sensors correctly throughout your network is crucial to successfully implementing your Cisco intrusion detection system .Which two of these are characteristics of an IDS sensor?（） [" has a permissive interface that is used to monitor networks"," is an active device in the traffic path"," passively listens to network traffic"," has a promiscuous interface that is used to monitor the network"]
eNodeB基站设备形态主要包括（）。 ["宏基站","BBU+拉远RRU","微基站","微RRU","家庭基站"]
智力技能
