不符合阵发性寒冷性血红蛋白尿症的是（）
A.与病毒感染有关
B.抗体主要是IgG
C.无补体参加
D.冷溶血检查可确诊
E.血管内溶血
参考答案：C
A client, a gravida 3 para 2 at 35 weeks’ gestation, comes in to the antepartum clinic for a check-up. She has been experiencing backaches after standing all day at her job as a grocery clerk. Which of the following exercise would the nurse suggest to relieve backache
A. The pelvic tilt.B. Squatting.C. Stretching.D. Walkin
为显示流速极低的血流信号，宜选用（）。
A.A型超声
B.B型超声
C.M型超声
D.彩色多普勒血流显像
E.彩色能量图
