【单选题】According to the statement of para4 , what is risk ?
A.
unmeasurable uncertainty
C.
measurable uncertainty
D.
unmeasurable certainty
【单选题】腹股沟内侧肿块,平卧消失,扪到外环容食指进入,咳嗽时指尖处有冲击感
【简答题】What is Operational Risk?
【简答题】What is control risk?
【多选题】What is risk factors for preeclampsia ( ).