胎儿脐带的超声图像特征是:①一端连接胎盘,一端连接胎儿脐部;②横切呈"品"形;③纵切呈麻花样;④多普勒超声显示1条脐静脉和2条脐动脉() ["①②③","①③","②④","④","①②③④"]
经子宫壁淋巴和血管播散的急性输卵管炎的病理特征是() ["输卵和黏膜不受累或受累极轻","输卵和肌层变厚","病变以输卵管间质炎为主","输卵管腔多在某段出现闭锁","输卵管不通畅"]
精原细胞瘤声像图表现为() ["单个小的囊性肿块","超声无法探测","实质均匀性肿块","大而多个囊性肿块","以上都不是"]
以下哪些标准可增加急性盆腔炎诊断的特异性() ["体温>38℃,白细胞>10×109/L","后穹隆穿刺抽出脓液","妇查及B超发现盆腔脓性或炎性包块","腹腔镜","上述都不正确"]
舌对苦味敏感的部位是() ["舌尖","舌背","舌缘","舌根","舌腹"]
统计分析的基本过程就是由()推断()的过程。该()是该()的一部分。