乳剂的不稳定现象有（）、（）、（）、（）、（）等。
参考答案：分层；絮凝；转相；合并与破裂；酸败
在△ABC中，∠A = 90°，BD是∠B的平分线，并且交AC于D，DA = a，则点D 到BC的距离是
Which of the following nursing measures would the nurse institute to help reduce eyelid edema in a child with nephrotic syndrome()
A. Instill eye drops every 8 hours.
B. Limit the child’s television watching.
C. Apply cool compresses to the child’s eyes.
D. Elevate the head of the child’s bed.
