第9题: [多项选择]CT扫描注意事项中,为保障CT机的良好工作状态,应做到 A. CT机房的温度保持在20℃左右 B. CT机房的湿度应在50%~70% C. 每天开机后应进行CT球管训练 D. 对球管的训练是从高千伏、毫安到低千伏、毫安的多次曝光 E. 定期对CT值校准 参考答案:A,B,C,E 答案解析:对球管的训练是从低千伏、毫安到高千伏、毫安进行多次曝光。
第25题: [单项选择]Which of the following best states the passage A. Manners ought to be thrown away altogether. B. In manners one should follow his own judgment. C. Women no longer need to be helped in public. D. Men are not expected to be courteous to women. 参考答案:B 答案解析:文章的第一句明确地提出了此论点,其余几段(对Ms.Holmes的引述和作者的做法)都为这一主题服务。A项过于绝对,因为作者只说要丢弃“outdated courtesies”,并没有说完全要丢弃礼貌,