摘 要：This article mainly studies the negative transfer of some pronunciations of Shaanxi dialect in second language acqu......

[目的]探讨18F-FDG PET/CT显像在血清肿瘤标志物CA199水平升高诊断中的应用价值。[方法]15例血CA199水平升高者行18F-FDG PET/CT显......