某产妇,G5P5,胎儿娩出后阴道大量流血,胎盘未娩出,手取胎盘失败。此时最恰当的处理是() ["准备子宫切除术","行清宫术","继续观察","再次手取胎盘","检查软产道"]
诊断宫内早孕的最可靠的辅助检查方法是() ["尿妊娠试验","基础体温测定","B超检查","阴道脱落细胞学检查","宫颈黏液涂片干燥后镜检"]
避孕套的作用原理是()。 ["抑制排卵","使子宫颈黏液变稠","杀死精子","阻止精子和卵子相遇","改变子宫腔内环境,影响受精卵着床"]
紧急避孕药物在无保护措施的性生活后什么时限内服用?() ["1日","2~3日","3~5日","5~7日","5~10日"]
测得白细胞计数为8.5×109/L,组报告单上写的是5.8×109/L,这种差错是() ["A.系统误差","B.偶然误差","C.过失误差","D.操作误差","E.以上均是"]
右胫腓骨开放骨折,清创内固定后切口愈合良好()。腰椎结核伴椎旁冷脓肿病灶清除术,切口愈合良好()。腹股沟疝修补术,切口愈合良好()。