肠上皮细胞由肠腔吸收葡萄糖属于() ["单纯扩散","易化扩散","继发性主动转运","入胞作用","原发性主动转运"]
下列哪一个不是99mTc-MIBI的优点() ["99mTc物理半衰期短","99mTc发射几乎纯的γ射线","99mTc-MIBI体外标记时需要沸水加热15分钟,标记后1~2小时才能显像","99mTc射线能量140keV,适合SPECT显像","患者接受的辐射剂量低,可以加大使用剂量,采集信息量大,图像质量高"]
上颌窦穿刺时进针部位过于偏前可引起() ["面颊部皮下气肿或感染","眶内气肿或感染","翼腭窝感染","气栓","冲洗时有阻力"]
沿单根神经纤维传导的动作电位的幅度() ["不变","不断减小","不断增大","先增大后减小","不规则变化"]
保存断肢最好的方法是() ["浸泡于生理盐水中","浸泡于抗生素溶液中","浸泡于新洁尔灭溶液中","包装于口袋内干燥冷藏","置于冰块内"]
肥厚型梗阻性心肌病的超声心电图特征有哪些?