简述盐浴炉的加热方式。
催化重整中用的最多的原料?() ["直馏汽油馏分","焦化汽油","加氢汽油","航空煤油"]
前囟闭合时间为() ["4~10个月","1岁","1岁~1岁半","2岁","3岁"]
患者,中年男性。血尿半个月余,IVP示同侧肾盂,输尿管及膀胱均充盈缺损。该患者如行CT检查,下列说法哪项不正确() ["病灶呈分叶状","肿瘤常伴有钙化","增强后病灶可见不规则低密度区","病灶内部密度不均","病灶可侵犯周围组织,脂肪间隙模糊不清"]
诊断膀胱结石的最好方法是() ["依据典型症状尿流中断","金属尿道探条检查","膀胱镜检查","腹部平片检查","腹部触诊"]
简述全相显微镜的物镜的主要特性。