老年型社区的标准是指65岁以上人口占总人口的（） ["<4％",">7％",">10％","<15％","<4.7％"]
下列哪一项不属于社区常见健康问题的特征（） ["病情均比较明确","疾患均处于早期未分化阶段","生物-心理-社会问题交错","慢性疾病以稳定期为主","疾病以常见病、多发病为主"]
甲型血友病患者输血宜选（） ["冷沉淀","血浆","全血","浓缩红细胞","血小板"]
属于一级预防的是（） ["早发现","社会康复","健康教育","康复治疗","子宫颈癌筛检"]
ACD保养液保存全血于4～6℃21天，红细胞在体内存活率为（） ["50%","60%","70%","80%","90%"]
简述可摘局部义齿的类型及支持方式。
