腹壁听诊，哪种声音与胎心音频率一致（）
A.胎盘血流杂音
B.腹主动脉音
C.脐带杂音
D.胎动杂音
E.子宫杂音
参考答案：C
出现哪一种表现提示肝硬化已进入失代偿期()
A．上腹不适
B．乏力、食欲不振
C．恶心、厌油腻食物
D．蜘蛛痣和肝掌
E．肝脏轻度肿大
One day a car rental agency rented 2/3 of its cars, including 3/5 of its cars with CD players. If 3/4 of its cars have CD players, what percent of the cars that were not rented had CD players ？（）
A. 10%
B. 35%
C. 45%
D. 66.7%
E. 90%
