晚期产后出血的主要原因是 A.不完全前置胎盘 B.胎盘早剥 C.宫缩乏力 D.子宫复 发布时间:2017-03-17 10:58 │ 来源:www.tikuol.com 题型:单项选择题 问题: 晚期产后出血的主要原因是A.不完全前置胎盘B.胎盘早剥C.宫缩乏力D.子宫复旧不全E.凝血机制障碍
题型:单项选择题 We must do what we can to ____________the river ______________.A.protect; against pollutingB.stop; pollutingC.keep; being pollutedD.prevent; from being polluted 查看答案