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红硬性 维持子宫正常位置主要依靠（） ["盆底肌肉和筋膜","子宫韧带","肛提肌","盆膈和泌尿生殖膈","子宫韧带和盆底组织"] 2英寸等于（）mm。 ["50.8","49","67.4","60"] 疑诊新生儿溶血病时，首选的检查是：（） ["血型","血常规","改良Coombs试验","抗体释放试验","游离抗体试验"] 气温年较差是指一年中（）的最高值与最低值之差。 ["A.日平均气温 ","B.旬平均气温 ","C.月平均气温 ","D.热浪与寒潮极端气温"] 高速公路