A 34-year-old client is 34 weeks pregnant and is experiencing bleeding caused by placenta previ

a. The fetal heart sounds are normal and the client isn’t in labor. Which of the following nursing interventions should be of priorityA. Monitor the amount of vaginal blood loss.B. Allow the client to ambulate with assistance.C. Perform a vaginal examination to cheek for cervical dilation.D. Notify the physician for a fetal heart rate of 130 beats/minut

引蜡油建立开路循环时，分馏塔底液面达50%后，即可开启辐射泵。