题目: We used to see each other , but I haven't head from him since last year. [ ]A. especially B. regularly C. particularly D. approximately 答案: 答案:B
题型:单项选择题 A1/A2型题 关于CT的描述,错误的是()A.矩阵越大,空间分辨率越高B.像素越小,空间分辨率越高C.CT的空间分辨率比X线照片的空间分辨率高D.CT的密度分辨率比X线照片的密度分辨率高E.现代64层及以上CT扫描的图像可以达到各向同性,即任意平面重建的图像空间分辨率和横断图像的空间分辨率相同 查看答案