第11题: [单项选择]At what time does Mary always come A. At half past three. B. At four o’’clock. C. At two o’’clock. D. At three o’’clock. 参考答案:D 答案解析:W: Surely, Mary comes in here every day at 3 o’’clock.
M: I thought she would come at 3:30. She alw
第38题: [单项选择]胸骨正位摄影宜用的呼吸方式是 A. 平静呼吸 B. 平静呼吸下屏气 C. 深吸气后屏气 D. 深呼气后屏气 E. 均匀缓慢连续浅呼吸 参考答案:E 答案解析:胸骨后前位摄影条件采用低管电压、低管电流、长曝光时间，以增加背景的运动模糊度。屏气情况：曝光时胸骨贴紧片盒，进行均匀的浅缓呼吸。
