社区护理的中心是（）。
A.社区人群
B.健康
C.预防疾病
D.减少残障
E.维护社区的良好环境
参考答案：B
小量咯血是指
A．1次咯血量＜50mlB．24小时咯血量＜50mlC．1次咯血量＜100mlD．24小时咯血量＜100mlE．以上均不是
Before administering a tube feeding to a toddler, which of the following methods should the nurse use to check the placement of a nasogastric (NG) tube（）
A. Abdominal X-rays.
B. Injection of a small amount of air while listening with a stethoscope over the abdominal area.
C. A check of the pH of fluid aspirated from the tube.
D. Visualization of the measurement mark on the tube made at the time of insertion.
