脑挫裂伤() ["右侧内囊前支卵圆形高密度造影","环池内高密度影","右眶额回斑片状高密度,周边伴水肿","左侧颞部颅板下梭形高密度","左侧额部颅板下新月形水样密度"]
肺水肿防治原则应是() ["防止毒物继续侵入","肾上腺皮质激素的应用,限制补液量。脱水、利尿","维持呼吸道通畅","兴奋呼吸中枢、支气管解痉、对症治疗等","以上都是"]
肝、肾功能不全的患者,应当选择哪一种肌松药?() ["筒箭毒碱","阿曲库铵","阿库氯胺","加拉碘胺","泮库溴铵"]
不属于自身免疫性大疱性皮肤病的有() ["大疱性类天疱疮","疱疹样皮炎","天疱疮","多形红斑","妊娠疱疹"]
关于胎膜破裂,下列哪项是正确的() ["人工破膜应在宫缩时进行,以便观察胎头下降情况","产程中,胎膜多在宫口近开全时自然破裂","头先露时,破膜后发现羊水黄绿色混有胎粪,应尽快剖宫产结束分娩","破膜后若胎先露仍浮动,未入盆,需卧床,防止脐带脱垂","破膜超过12小时尚未分娩者应给予抗生素预防感染"]
试述双胎胎儿、胎盘的特征。