[名词解释] 三级过滤

下列何项不属肾单位组成？（） ["肾小体","集合小管","近端小管","细段","远端小管"] 在SDCCH信道上，一个测量报告周期是（）帧 ["A、102","B、51","C、104","D、52"] SMR 理想功率 cohortstudy 三级过滤