单项选择题 关于妊娠期母体循环系统的变化哪项不对A. 多数孕妇在心尖区及肺动脉瓣区可听到Ⅰ~Ⅱ级柔和的吹风样收缩期杂音B. 心排血量从妊娠10周起逐渐增加C. 心排血量在妊娠32-34周达到高峰D. 心排血量在妊娠30周达到高峰E. 若孕妇合并心脏病在妊娠期及分娩期易发生心力衰竭

单项选择题 Using evidence is especially critical in a persuasive speech when your target audience __________. A. is apathetic about your point of view B. is neutral toward your point of view C. opposes your point of view D. supports your point of view

问答题 膜下滴管技术具有  （[填空(1)]  ）  的优点