第12题: [单项选择]The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to() A. stays at rest B. is working stably C. is worn out D. is in good operation 参考答案:A
第31题: [单项选择]甲状腺CT扫描时,患者呼吸状态要求应是() A. 不要屏气 B. 吸气后屏气 C. 呼气后屏气 D. 平静呼吸状态下屏气 E. 以上状态均可 参考答案:D 答案解析:甲状腺CT扫描,虽然扫描起始线是从胸部主动脉弓上缘开始,但观察的是甲状腺而不是肺组织,要求平静呼吸状态下屏气即可。