巩膜葡萄肿
后牙为远中错?,前牙深覆盖,其矫治原则为() ["矫治前牙反?","减径或减数","矫正颌间关系,推上牙弓往后,或牵下牙弓向前,或两者并用","缩小牙弓或结合修复治疗","以上都不是"]
门静脉高压症的主要原因是() ["门静脉主干先天性畸形","肝静脉血栓形成、狭窄","肝段下腔静脉阻塞","肝硬化","各种原因致脾静脉血流量过大"]
男,47岁,肝硬化8年,查体有中等量腹水,如应用利尿剂,首选的是() ["甘露醇","螺内酯(安体舒通)","乙酰唑胺","氢氯噻嗪(双氢克尿塞)","速尿"]
后牙中性?、前牙反?的矫治原则为() ["缩小牙弓或结合修复治疗","扩大牙弓,推磨牙向后,减径或减数","矫治前牙深覆盖","肌能训练矫治法","以上都不是"]
简述PVR的分期。