[名词解释] “哑性”二尖瓣狭窄

基本接近成人脑重量的年龄是() ["A．6岁","B．8岁","C．5岁","D．7岁","E．9岁"] 靴形心 开瓣音 隔膜型二尖瓣 老年期人格变化的大体趋势是() ["A．不安全感","B．孤独感","C．适应性差","D．保守刻板","E．以上都是"] “哑性”二尖瓣狭窄