下列哪些成分与血沉速度的变化有关() ["A．红细胞","B．白细胞","C．血小板","D．血浆","E．纤维蛋白原"] 与产后宫缩乏力性出血无关的因素是() ["A．产程延长","B．严重贫血","C．脐带绕颈","D．巨大胎儿","E．羊水过多"] 列关于血浆的叙述哪些是错误的() ["A．血浆是从凝固的血液中分离出来的液体","B．血浆中不含Ca和其他电解质","C．血浆中含有纤维蛋白原","D．加入Ca后血浆可以再凝固","E．血浆中不含红细胞"] 胎膜早破的不良后果正确的是() ["A．早产","B．感染","C．宫缩乏力","D．脐带脱垂","E．以上说法都正确"] 对羊水栓塞产妇的处理，哪一项不妥() ["A．出血早期用抗凝剂","B．出血晚期用抗纤溶药","C．出血早期补充凝血因子","D．少尿、无尿时用利尿剂","E．早期用罂粟碱"] 产后出血，最主要的原因是()