I often listen to the news _______ the radio. [ ]
A. on
B. in
C. at
D. about
答案:A
三腔两囊管的护理下列哪项不正确
A.观察引流液的颜色
B.胃囊的压力为50mmHg
C.出血停止后立即拔管
D.做好鼻腔、口腔的护理
E.拔管前口服液体石蜡20~30ml
根据WHO估计,全球有多少盲人是可以避免的()
A.46%
B.60%
C.12.5%
D.80%
E.90%