第16题: [单项选择]下列哪项不是影响MRI空间分辨力的因素() A. 体素 B. 层厚 C. FOV D. 扫描矩阵 E. 层间距 参考答案:E 答案解析:体素、扫描矩阵、FOV三者紧密相关,决定了体素的大小,进而影响空间分辨力。
第17题: [单项选择]Questions 8 to 10 are based on the following conversation. Which of the following is NOT the reason that the man wants to go on a diet A. He is too heavy. B. He doesn’t feel good. C. His doctor gave him that suggestion. D. He is not healthy. 参考答案:B 答案解析:[解析] 8-10 W: What do you plan to order M: I think I just have a salad and a cup of tea. W:
第18题: [单项选择]高血压合并糖尿病的患者,不宜用下列哪种药物 A. 氢氯噻嗪 B. 血管紧张素转化酶抑制剂 C. 美托洛尔 D. 哌唑嗪 E. 硝苯地平 参考答案:A 答案解析:中效利尿药氢氯噻嗪可能是抑制了胰岛素的分泌或抑制肝PDE,使 cAMP中介的糖原分解作用加强,引起高血糖,因此高血压合并糖尿病的患者不宜用。其他几个药物可依据病情选用,对血糖无影响。