尿液中可能含有肌细胞溶解过程中排出的肌红蛋白，此时尿液的颜色多为（）
A.棕红色
B.棕色
C.黄褐色
D.绿色
E.深黄色
参考答案：B
细胞外液中主要的阳离子是（）
A.K+
B.Na+
C.Ca2+
D.Mg2+
E.Fe2+
A woman tells the nurse that her 6-year-old daughter has severe nosebleeds. Which of the following instructions should the nurse give this woman to manage nosebleeds()
A. Help the child assume a comfortable position with her head tilted backward.
B. Tilt the child’s head backward and place firm pressure on the nose.
C. Help the child lie on her stomach and collect the blood on a clean towel.
D. Place the child in a sitting position with her neck bent forward and apply firm pressure on the nasal septum.
