第11题:[单选题] The PE ratio approach to valuing stock is especially useful for valuing A. publicly held corporations. B. firms that regularly pay dividends. C. both A and B of the above. D. neither A nor B of the above. 参考答案:D
第12题: [单项选择]目前,CT机在头颅标准扫描模式时,其空间分辨率约为()。 A. 20mm B. 10mm C. 5mm D. 1mm E. 0.01mm 参考答案:D 答案解析:目前,CT机在头颅标准扫描模式时,其空间分辨率约为1mm以内,在高分辨率扫描模式时,分辨率可达0.25mm。