唾液腺CT扫描图像的显示窗位应根据() ["A、腮腺CT值调整","B、嚼肌CT值调整","C、下颌支CT值调整","D、软组织CT值调整","E、颌下腺CT值调整"]
机动车在()不得掉头。 ["A、设有禁止左转弯标志","B、铁路道口","C、人行横道","D、容易发生危险的"]
关于唾液腺CT扫描技术的叙述,错误的是() ["A、一般做冠状面扫描","B、通常需要进行增强扫描","C、扫描基线可采用听眦线","D、扫描范围从外耳道下缘至下颌角水平","E、注意避开牙齿的金属填充物,必要时改换机架角度"]
轮对分为哪些类型?
关于鼻窦和鼻咽部CT扫描技术,错误的是() ["A、以横断面扫描为主","B、一般可不作增强扫描","C、颅底病变以冠状面扫描为好","D、观察颅底骨质破坏时应采用薄层扫描","E、横断扫描的扫描基线垂直于上颌窦底壁"]
简述RD2型车轴与D型车轴的区别。