材料的弹性模量E是衡量材料在弹性范围内抵抗()能力的指标。 ["A.破坏","B.变形","C.弯曲","D.疲劳"]
胎膜的组成()胎儿附属物() ["A.羊膜、叶状绒毛膜、底蜕膜","B.初级绒毛、二级绒毛、三级绒毛","C.绒毛膜、羊膜","D.胎盘、胎膜、脐带、羊水","E.底蜕膜、包蜕膜、真蜕膜"]
含水率为5%的中砂2200g,其干燥时的质量是()。 ["A.2100g","B.1990g","C.2095g","D.1920g"]
女,30岁,膝痛四月余,结合图像,最可能的诊断是() ["A.畸形性骨炎","B.嗜酸肉芽肿","C.成软骨细胞瘤","D.骨囊肿","E.骨巨细胞瘤"]
下列哪项不是受精卵着床的条件() ["A.透明带消失","B.子宫内膜蜕膜样变","C.囊胚与子宫内膜必须同步发育配合","D.滋养细胞分化出合体滋养细胞","E.必须有足够的孕酮"]
在胎盘内进行物质交换及转换方式
氨基酸、水溶性维生素及钙、铁等()氧气、二氧化碳、钾、钠、氯等电解质()葡萄糖()