对检出转移性骨肿瘤最敏感且无假阳性的方法是() ["A．CT","B．MRI","C．X-ray","D．核素","E．DSA"]
高速公路和一级公路下路堤的压实度不小于（）。 ["A．95%","B．90%","C．92%","D．93%"]
椎体血管瘤MRI表现() ["A．男性多见","B．T1加权像，椎体内栅栏状低信号区","C．T2加权像显示不清","D．脂肪抑制序列显示不佳","E．可侵犯椎间隙"]
高速公路和一级公路，路床顶面以下80~150cm的路基压实度不小于（）。 ["A．95%","B．94%","C．92%","D．90%"]
下述一组软组织肿瘤的MRI表现中，哪项不对() ["A．淋巴管瘤肿块呈长T1、长T2信号","B．滑膜肉瘤肿块多呈长T1、长T2信号","C．血管瘤肿块多呈不均匀长T1、长T2信号","D．脂肪肉瘤黏液型多呈长T1、长T2信号","E．脂肪瘤肿块多呈短T1、短T2信号"]
此图是胎儿血液循环图，A是脐_____，B是脐_____，A中血氧浓度比B_____。
