1.5g氯化钾相当于K() ["A．5mmol","B．10mmol","C．15mmol","D．20mmol","E．25mmol"]
双胎妊娠错误的是() ["A．容易并发妊高征","B．容易并发前置胎盘","C．容易发生胎盘早剥","D．容易发生过期妊娠","E．容易发生早产"]
一般来说，要获得同等的扩容效果，所需等渗性晶体液与等渗性胶体液的比为() ["A．1:1","B．2:1","C．3:1","D．4:1","E．5:1"]
简述血液稀释的禁忌证。
血小板可用冰冻方法保存。()
手术中大量输血的不良反应有哪些?
